Sasha Pieterse tears up over health problems, opens up about losing 15 pounds since joining 'DWTS'

Sasha Pieterse got emotional on Tuesday's Dancing With the Stars when she opened up about her recent health struggles.

Before she and pro partner Gleb Savchenko took to the stage to perform a samba set to Hailee Steinfeld's "Most Girls," thePretty Little Liars star opened up about why she felt a connection with the song in a pre-taped segment.

"I love the song because it really resonates with me about what I've been through, and what I'm still going through," Pieterse shared.

Speaking with Savchenko during rehearsals, the actress fought back tears as she opened up about her weight gain and the painful insults she endured because of it.

'Dancing With the Stars' season 25 cast
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'Dancing With the Stars' season 25 cast

Sasha Pieterse

(Photo by D Dipasupil/FilmMagic)

Terrell Owens

(Photo by J. Countess/WireImage)

Barbara Corcoran

(Photo by Ilya S. Savenok/Getty Images for T.J. Maxx)

Vanessa Lachey and Nick Lachey

(Photo by Michael Tullberg/Getty Images)

Debbie Gibson

(Photo by Gabe Ginsberg/FilmMagic)

Drew Scott

(Photo by Noel Vasquez/Getty Images)

Frankie Muniz

(Photo by Adam Bettcher/Getty Images for Starkey Hearing Foundation)

Jordan Fisher

(Photo by Presley Ann/Patrick McMullan via Getty Images)

Nikki Bella

(Photo by Jim Spellman/Getty Images)

Derek Fisher

(Photo by Gabriel Olsen/WireImage)

Lindsey Sterling

(Photo by Josh Brasted/FilmMagic)

Victoria Arlen

(Photo by Phillip Faraone/Patrick McMullan via Getty Images)


WATCH: 'Pretty Little Liars' Star Sasha Pieterse Dishes on Joining 'DWTS'!

"I gained 70-ish pounds over two years," Pieterse recounted. "It was really, really hurtful the way people reacted. They were saying stuff like, 'She's pregnant.' 'You're fat.' They were angry, they were mad that I look like this. It was one of the hardest things I've ever been through."

The 21-year-old actress said she had no idea why she suddenly started putting on weight, and had no idea how to deal with her problem until just recently, when she was diagnosed with Polycystic Ovary Syndrome, a hormone imbalance.

Net worths of the 'Dancing with the Stars' season 25 cast and pros
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Net worths of the 'Dancing with the Stars' season 25 cast and pros

‘Dancing With the Stars’ 2017 Cast Members

This year's "Dancing With the Stars" cast includes husband and wife competitors, pro athletes and reality stars. Keep reading to find out just how rich all the cast members — except for Broadway star and singer Jordan Fisher and Paralympic swimmer Victoria Arlen, whose net worth information is not available yet — are.

More in TV News: Ryan Seacrest’s Millions Keep Mounting With ‘Live’ Co-Host Spot

(Photo by Lou Rocco/ABC via Getty Images) DANCING WITH THE STARS SEASON 25 CAST

Barbara Corcoran Net Worth: $80 Million

  • DWTS Pro Partner: Keo Motsepe

Real estate mogul and "Shark Tank" panelist Barbara Corcoran has accumulated a net worth of $80 million thanks to her business savvy. No wonder many people follow her advice on how to get rich.

Corcoran was working as a waitress when she decided to quit her job and borrow $1,000 to start a small real estate company in New York City. Over the past 25 years, she has been able to turn her $1,000 loan into a business worth $5 billion. Corcoran is also a book author and motivational speaker.

(Photo by Lou Rocco/ABC via Getty Images) BARBARA CORCORAN, KEO MOTSEPE

Derek Fisher Net Worth: $40 Million

  • DWTS Pro Partner: Sharna Burgess

Former NBA player Derek Fisher played professional basketball for the Los Angeles Lakers, Golden State Warriors, Utah Jazz, Oklahoma City Thunder and the Dallas Mavericks.

Fisher spent most of his career with the Lakers and took home five championship rings while playing with the team. He also briefly worked as a coach for the New York Knicks, but he now works as a TV analyst during Lakers games.

(Craig Sjodin via Getty Images)

Frankie Muniz Net Worth: $40 Million

  • DWTS Pro Partner: Witney Carson

Frankie Muniz is best known for his starring role in the sitcom "Malcolm in the Middle," which earned him two Golden Globe nominations and one Emmy nomination. He also played the title role in the 2003 movie "Agent Cody Banks" as well as the 2004 sequel "Agent Cody Banks 2: Destination London." The 31-year-old is slated to return to the big screen in the upcoming thriller "The Black String."

Outside of acting, Muniz is an avid race car driver. For example, he has competed in the Champ Car World Series and the Las Vegas Grand Prix.

(Craig Sjodin via Getty Images)

Nick Lachey Net Worth: $20 Million

  • DWTS Pro Partner: Peta Murgatroyd

Boy band heartthrob Nick Lachey will be facing off against his wife Vanessa Lachey on the new season of "DWTS." After hitting it big with 98 Degrees, Lachey famously starred along with his ex-wife Jessica Simpson on the MTV reality show "Newlyweds."

Lachey and Simpson split in the early 2000s, and the singer married TV personality Vanessa Minnillo in 2011. The couple has three children together. In addition to being a singer, Lachey is also a part-owner of the Tacoma Rainiers, the Triple-A affiliate of the Seattle Mariners. He's also made big bucks off of infomercials.

(Photo by Lou Rocco/ABC via Getty Images) NICK LACHEY, PETA MURGATROYD

Vanessa Lachey Net Worth: $10 Million

  • DWTS Pro Partner: Maksim Chmerkovskiy

Former Miss Teen USA Vanessa Lachey has worked as a TV correspondent for "Entertainment Tonight" as well as a host of MTV's "Total Request Live." She has also worked as an actress, appearing on the TV series "The Bold and the Beautiful," "Dads" and "Truth Be Told."

Lachey will be facing off against her husband Nick Lachey on the current season. This will be the second time a married celebrity couple appears on the show together — in 2015, Alexa and Carlos PenaVega both competed for the Mirrorball.

(Photo by Lou Rocco/ABC via Getty Images) MAKS CHMERKOVSKIY, VANESSA LACHEY

Lindsey Stirling Net Worth: $10 Million

  • DWTS Pro Partner: Mark Ballas

Lindsey Stirling is an acclaimed violinist and composer who made waves for her use of the classical instrument to create dance and electronic music.

Stirling has nearly 10 million YouTube subscribers and over 1.9 billion views on her YouTube channel. She has released three full-length studio albums and won the 2017 Billboard Music Award for Top Dance/Electronic Album for her latest release, "Brave Enough."

(Heidi Gutman via Getty Images)

Drew Scott Net Worth: $10 Million

  • DWTS Pro Partner: Emma Slater

Drew Scott became a household name thanks to TLC's "Property Brothers," which follows Scott and his twin brother Jonathan as they help couples turn their fixer-uppers into the homes of their dreams. While he's best known for his work in real estate and reality TV, Scott also has made appearances on the scripted shows "Smallville" and "Breaker High."

(Craig Sjodin via Getty Images)

Debbie Gibson Net Worth: $5 Million

  • DWTS Pro Partner: Alan Bersten

Debbie Gibson gained fame at the age of 16 with the release of her self-written single "Only In My Dreams." She has since sold more than 16 million albums worldwide.

In addition to her pop singing career, Gibson has starred in 17 musical productions, including Broadway's "Les Miserables" and "Cabaret." She has also appeared on "The Celebrity Apprentice" and made a cameo in the movie "Rock of Ages."

Don't Miss: The 50 Richest and Poorest Celebrity Apprentice Cast Members

(Craig Sjodin via Getty Images)

Nikki Bella Net Worth: $4 Million

  • DWTS Pro Partner: Artem Chigvintsev

WWE star Nikki Bella is one-half of the wrestling duo The Bella Twins, along with her sister Brie.

Bella started her athletic career playing soccer, but she now stars on the E! reality series "Total Divas," which follows the lives of female pro wrestlers. Bella got engaged to fellow wrestler John Cena in April when he surprised her with a ring during a WrestleMania event.

(Craig Sjodin via Getty Images)

Sasha Pieterse Net Worth: $2 Million

  • DWTS Pro Partner: Gleb Savchenko

Sasha Pieterse landed her breakthrough role at the age of 12, playing mean girl Alison DiLaurentis on the hit Freeform drama "Pretty Little Liars." Although her net worth is an impressive $2 million, she is not the richest cast member from the show.

Pieterse starred in the comedy series "Family Affair" at the age of 6. She has also appeared on the TV show "Heroes" and had small roles in "Good Luck Chuck" and "X-Men: First Class."

(Photo by Lou Rocco/ABC via Getty Images) SASHA PIETERSE, GLEB SAVCHENKO

Terrell Owens Net Worth: $0

  • DWTS Pro Partner: Cheryl Burke

Despite earning approximately $80 million during his NFL career, Terrell Owens claimed in a 2012 interview with GQ that he's totally broke. Owens told the magazine he lost his fortune due to a series of bad investments, the crash in the real estate market and the fact that he pays a total of $44,600 a month in child support for his four children.

Despite his financial downfall, Owens is considered one of the greatest wide receivers in NFL history.

Also See: 10 Best and Worst NFL Players When It Comes to Money

(Photo by Bruce Glikas/Bruce Glikas/Getty Images)

‘Dancing With the Stars’ 2017 Professional Dancers

"Dancing With the Stars" season 25 will feature some familiar faces, including Mark Ballas, brothers Maksim and Val Chmerkovskiy, Lindsay Arnold, Sharna Burgess, Gleb Savchenko and defending champ Emma Slater. There's also a newcomer joining the "DWTS" cast: Alan Bersten. Bersten temporarily replaced an injured Maksim Chmerkovskiy for four weeks last season, but this will be his first time to officially dance on the season as a pro.

Here's a look at the wealth of the "DWTS" professional dancers — except for Arnold, Bersten and Savchenko, whose net worth information is not available yet — who will battle it out this season.

Revisit Last Season: See How Rich the 'DWTS' Season 24 Cast Is

(Photo by Lou Rocco/ABC via Getty Images) 

Valentin Chmerkovskiy Net Worth: $5 Million

Valentin Chmerkovskiy took home the Mirrorball in season 20 with partner Rumer Willis and again in season 23 with Olympic gymnast Laurie Hernandez. Chmerkovskiy has also toured the country during "Dancing With the Stars: Live!" His net worth is estimated at $5 million.

(Craig Sjodin via Getty Images)

Mark Ballas Net Worth: $3 Million

Mark Ballas will be making a return to the ballroom for "Dancing With the Stars" season 25 after a two-season hiatus, reports ABC. The pro dancer took home the Mirrorball Trophy in season 6 with partner Kristi Yamaguchi and again in season 8 with partner Shawn Johnson, who's one of the richest Olympic athletes.

In addition to his dancing career, Ballas is a member of the singer-songwriter duo Alexander Jean, along with his wife BC Jean. The couple got married last November. Mark Ballas' net worth is estimated at $3 million.

(Photo by Bruce Glikas/Bruce Glikas/Getty Images)

Maksim Chmerkovskiy Net Worth: $3 Million

Like Ballas, Maksim Chmerkovskiy's net worth is estimated at $3 million. Chmerkovskiy has been a member of the "Dancing With the Stars" cast for a total of 16 seasons and took home the Mirrorball Trophy on season 18. He’ll be back for season 25 for another shot at the top prize.

Chmerkovskiy has also appeared on Broadway as a dancer in two different productions: “Burn the Floor” and “Forever Tango.”

(Photo by Bruce Glikas/Bruce Glikas/Getty Images)

Artem Chigvintsev Net Worth: $2 Million

Artem Chigvintsev most recently appeared on “Dancing With the Stars” last season, performing with Olympic figure skater Nancy Kerrigan. While he has yet to take home the Mirrorball Trophy, he came in first on the British dance competition show “Strictly Come Dancing.”

Off the dance floor, Chigvintsev has dabbled in acting and has appeared on an episode of “The O.C.” His estimated net worth is $2 million.

(Photo by Bruce Glikas/Bruce Glikas/Getty Images)

Sharna Burgess Net Worth: $750,000

Sharna Burgess has come in second place twice — with partner Nick Carter on season 21 and with partner James Hinchcliffe on season 23. She has yet to take home the Mirrorball Trophy.

Before dancing across American television sets, Burgess appeared on the Australian version of “Dancing With the Stars” and “So You Think You Can Dance Holland.” Her net worth is $750,000.

(Photo by Bruce Glikas/Bruce Glikas/Getty Images)

Cheryl Burke Net Worth: $450,000

Cheryl Burke has been dancing professionally for more than 20 years, and has appeared on 19 seasons of “Dancing With the Stars.” Burke has made it to the finals seven times and the semi-finals 10 times.

She last took home the Mirrorball Trophy in season 3 with her partner Emmitt Smith, and previously took home the top prize in season 2 with partner Drew Lachey. Outside of her dance career, Burke launched an active wear line with QVC.

(Photo by Bruce Glikas/Bruce Glikas/Getty Images)

Peta Murgatroyd Net Worth: $400,000

Boasting an estimated net worth of $400,000, Peta Murgatroyd first appeared on “Dancing With the Stars” during the show's 13th season. But, she won the dance competition show during season 14 with partner Donald Driver and again during season 22 with Nyle DiMarco.

During "Dancing With the Stars" season 25, Murgatroyd will face off against her husband and fellow pro, Maksim Chmerkovskiy. The couple welcomed son Shai Aleksander in January, reports People.

(Photo by Lou Rocco/ABC via Getty Images) NICK LACHEY, PETA MURGATROYD

Emma Slater Net Worth: $300,000

Emma Slater is the most recent winner of “Dancing With the Stars,” taking home the top prize along with her partner — NFL star Rashad Jennings — during "DWTS" season 24.

Before appearing on the show, Slater starred alongside Meryl Streep and Amanda Seyfried in “Mamma Mia!" Her net worth is estimated at $300,000.

(Photo by Lou Rocco/ABC via Getty Images) VAL CHMERKOVSKIY, EMMA SLATER

Witney Carson Net Worth: $300,000

Witney Carson first appeared on “So You Think You Can Dance,” where she wowed audiences but was ultimately eliminated. But, she won "DWTS" season 19 with her celebrity partner, actor Alfonso Ribeiro of "The Fresh Prince of Bel-Air" fame.

(Craig Sjodin via Getty Images)

Keo Motsepe Net Worth: $300,000

Keo Motsepe most recently appeared on "DWTS" season 24 with partner Charo. The South African native is the first Black professional dancer to compete on “Dancing With the Stars,” reports Essence magazine.

Before joining the “DWTS” cast, he worked as a dancer on a cruise ship. Motsepe's net worth is estimated at $300,000.

(Photo by David Livingston/Getty Images)

Derek Hough Net Worth: $4 Million*

Derek Hough — brother to Julianne Hough, who has also been a "Dancing With the Stars" professional dancer — is not included on the list of "DWTS" professional dancers competing this season. Hough has won an impressive number of Mirrorball trophies — six to be exact.

Beyond his dancing career, Hough has made some moves to branch out into acting. For example, he appeared on "Nashville" from 2014 to 2016 and also appeared on the "Hairspray Live!" TV movie. Derek Hough's net worth is an impressive $4 million.

*Honorable mention

(Photo by Jason LaVeris/FilmMagic)

‘Dancing With the Stars’ 2017 Judges

ABC has stated that our favorite judges will be back for the new season, so it's safe to say you can expect to see Carrie Ann Inaba, Bruno Tonioli, Len Goodman and Julianne Hough providing season 25's dancing hopefuls with their scores. Here's a look at the "Dancing With the Stars" judges' net worths.


Len Goodman Net Worth: $12 Million

A retired dancer and dance teacher, Len Goodman has been a judge on the "DWTS" British counterpart, "Strictly Come Dancing." But, it's his work on "DWTS" that's earned him two Emmy nominations.

Goodman has been a member of the "DWTS" cast for over a decade, though he holds more than 60 credits elsewhere. In fact, he's the richest "DWTS" judge, with a net worth of $12 million.

(Photo by Byron Cohen/ABC via Getty Images) LEN GOODMAN

Julianne Hough Net Worth: $10 Million

Professional dancer Julianne Hough won "Dancing With the Stars" twice. However, she eventually danced her way to the judges' table.

Hough is also an accomplished singer and actress. In 2011, she starred in the "Footloose" reboot. And, she even has a country album. Julianne Hough's net worth is a whopping $10 million.

See More Multitalented Celebs: Biggest Hits (and Flops) of Celebrities Who Dabbled in Music

(Eric McCandless/ABC via Getty Images) JULIANNE HOUGH

Bruno Tonioli Net Worth: $10 Million

Bruno Tonioli has over 80 television and movie credits dating back to "The Don Ho Show" in 1976, where he performed as a dancer. He's also been a judge on "Strictly Come Dancing."

Being a part of the "DWTS" cast has earned him two Emmy nominations as well. Bruno Tonioli's net worth is $10 million.


Carrie Ann Inaba Net Worth: $9 Million

Carrie Ann Inaba is a dancer, singer and actress. She has more than 75 movie and television credits, including over a decade of work on "DWTS."

Before that joining the "DWTS" cast, she was a "Fly Girl" dancer on "In Living Color." The entertainer has two Emmy nominations to her name, and her net worth is $9 million.

The "Dancing With the Stars" premiere airs on Sept. 18, 2017, on ABC.

All net worth figures are according to unless otherwise noted.

Andrew Lisa contributed to the reporting for this article.

(Photo by Axelle/Bauer-Griffin/FilmMagic)

"Finally, I knew what this was happening to me," she shared.

WATCH: Sasha Pieterse 'Bummed' By Performance on 'DWTS' Season 25 Premiere: 'It Wasn't My Best'

Since starting the show, Pieterse said she's already lost 15 pounds and "most importantly, I'm feeling like me again."

"It's not an easy road, but being able to focus on getting myself healthy again and the fact that I'm seeing results now and getting better is all I can ask for," she added.

Hitting the dance floor for their prom-themed routine, Pieterse absolutely beamed as she and Savchenko pulled off a beautiful, strong and dynamic samba that earned some love and praise from the judges -- especially Carrie Ann Inaba.

"Most girls are sitting at home thinking, 'I wanna be like you,' that's what's happening right now." Inaba exclaimed. "The best part of being a judge on this show is watching someone like you really blossom into yourself. You are great out there."

WATCH: Sasha Pieterse Talks 'Pretty Little Liars' Spinoff: 'It's a Fun New World'

Shocking celebrity weight-loss transformations
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Shocking celebrity weight-loss transformations

Mama June in 2013


Mama June in 2017

The "Honey Boo Boo" star documented her weight loss journey on her very own reality show! She is now down to a size 4 -- and she looks incredible!


Khloe Kardashian in 2012


Khloe Kardashian in 2016

Hard work does pay off! The youngest Kardashian sister is obsessed with exercising and documents all her workout sessions on social media.


Lena Dunham in 2015


Lena Dunham in 2017

The "Girls" star lost a significant amount of weight after going on a holistic diet to help alleviate symptoms of endometriosis. 


Wendy Williams in 2012


Wendy Williams in 2017

The TV personality revealed in 2015 that she lost 50 pounds over the course of three years with a healthy diet that doesn't include refined sugars, meat, dairy or "eating after dark." It looks like she's been committed to the strict diet. She looks better than ever in 2017!


Ricki Lake in 2010


Ricki Lake in 2011

The actress lost 20 pounds when she appeared on "Dancing With the Stars" in 2011.


Jordin Sparks in 2008


Jordin Sparks in 2017

Hard work pays off! "American Idol" alum began her weight loss journey by walking around her neighborhood and the rest was history! Her favorite workout? Zumba.


Sara Rue in 2003


Sara Rue in 2016

The "Rules of Engagement" star is a total fan of Jenny Craig for its simplicity. She looks incredible and totally glowing!


Jonah Hill in 2014


Jonah Hill in 2017

Talk about a transformation! Hill has lost weight and gained weight through the years -- depending on the movie he's working on -- but his latest transformation is absolutely jaw-dropping.


Christina Aguilera in 2012


Christina Aguilera in 2013

Smoke show! The songstress dropped 20 pounds over the course of one year. Doesn't she look incredible?!


Miranda Lambert in 2012


Miranda Lambert in 2013

The country crooner slammed critics who accused her of having weight loss surgery. She revealed that she dropped the pounds the old-fashioned way -- eating right and working out with her trainer!



Speaking with co-host Erin Andrews after the performance Pieterse opened up about her DWTS journey and her emotional road to getting healthy.

"I feel like I've always been a happy person and I've been so blessed with an amazing family and friends, but I went through a hard time," she shared. "So, feeling like me again means the world, honestly."

For their sweet, energetic performance, the beaming couple earned a score of 22 out of 30, putting them near the top of the night's scoreboard.

Dancing With the Stars returns next Monday at 8 p.m. ET/PT on ABC.

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