Spelling said when her family was taping True Tori, the subject came up about how people were "obsessed" with the actress getting her breast implants removed because they had expired and been recalled. "[Stella] overheard and said, 'Huh, your boobs aren't real?' I was like, 'Oh my God,'" she recalled. "It was like Santa Claus. I didn't know what to do."
Her daughter did not take the news well. "Her world was just shattered," Spelling said. "It hit me hard, and I felt so guilty. I thought, 'I can't believe it.' Why was I even talking about getting my breast implants removed in True Tori? I shouldn't have been talking about that."
See photos of Tori Spelling from over the years:
Tori Spelling through the years
Tori Spelling says daughter was 'shattered' to find out about her breast implants
UNITED STATES - JANUARY 22: THE LOVE BOAT - Season Six - 1/22/83, Tori Spelling (Sarah) in the 'Doc's Big Case' episode of ABC's 'The Love Boat.', (Photo by ABC Photo Archives/ABC via Getty Images)
Candy Spelling and Tori Spelling at the Beverly Hilton Hotel in Beverly Hilton, California (Photo by Ron Galella/WireImage)
HOTEL - 'Barriers' - Airdate: March 11, 1987. (Photo by ABC Photo Archives/ABC via Getty Images)
L-R: SHARI BELAFONTE;TORI SPELLING;CONNIE SELLECCA
Tori Spelling, 1988. (Photo by Michael Ochs Archives/Getty Images)
Tori Spelling (Photo by Jeff Kravitz/FilmMagic)
SAVED BY THE BELL -- Pictured: (l-r) Tori Spelling as Violet Anne Bickerstaff, Dustin Diamond as Screech Powers (Photo by Alice S. Hall/NBC/NBCU Photo Bank via Getty Images)
LOS ANGELES - 1990: Actress Tori Spelling poses for a portrait in 1990 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
Brian Austin Green and Tori Spelling (Photo by Ron Galella, Ltd./WireImage)
Jason Priestley, Tori Spelling, Aaron Spelling, Shannen Doherty and Luke Perry at the Universal Studios in Universal City, California (Photo by Ron Galella/WireImage)
Tori Spelling (Photo by Ron Galella, Ltd./WireImage)
Tori Spelling & Brian Austin Green (Photo by Jeff Kravitz/FilmMagic)
THE TONIGHT SHOW WITH JAY LENO -- Episode 647 -- Pictured: (l-r) Actress Tori Spelling during an interview with host Jay Leno on March 7, 1995 -- (Photo by: Margaret Norton/NBC/NBCU Photo Bank via Getty Images)
Tori Spelling (Photo by Jim Smeal/WireImage)
Tori Spelling at the Mann's Village Theater in Westwood, California (Photo by Steve Granitz/WireImage)
Tori Spelling during Planet Hollywood Beverly Hills Grand Opening at Planet Hollywood in Beverly Hills, California, United States. (Photo by Jim Smeal/WireImage)
Tori Spelling (Photo by Steve Granitz Archive 1/WireImage)
Brian Austin Green, Gabrielle Carteris, Joe E. Tata, Vincent Young, Ian Ziering, Jennie Garth, Luke Perry & Tori Spelling (Photo by Jeff Kravitz/FilmMagic, Inc)
Tori Spelling (Photo by Jim Smeal/WireImage)
Tori Spelling (Photo by SGranitz/WireImage)
Tori Spelling (Photo by SGranitz/WireImage)
Tori Spelling during Women With Heart Auction At Christies at Christie's in Los Angeles, California, United States. (Photo by Iris/WireImage)
Tori Spelling (Photo by Tony Barson/WireImage)
Tori Spelling during 'Sol Goode' DVD Release Party at Club 1650 in Hollywood, California, United States. (Photo by Jean-Paul Aussenard/WireImage)
Jamie Kennedy & Tori Spelling during Jamie Kennedy Book Release Party at Shelter in West Hollywood, California, United States. (Photo by Barry King/WireImage)
Tori Spelling and Jason Priestley during 'Silver Spoon Dog and Baby BuffetÂ Benefitting Much Love Animal Rescue - Day One at Private Residence in Beverly Hills, California, United States. (Photo by Jean-Paul Aussenard/WireImage for Silver Spoon (formerly The Cabana))
Tori Spelling, engaged to Charlie Shanian, shows her new ring at the Hollywood & Highland in Hollywood, California (Photo by Gregg DeGuire/WireImage)
Tori Spelling during CA Boom Opening Night Extravaganza at Santa Monica Civic Auditorium in Santa Monica, California, United States. (Photo by Chris Polk/FilmMagic)
Tori Spelling (r) and husband Charles Shanian during 16th Carousel of Hope Presented by Mercedes-Benz to Benefit the Barbara Davis Center for Childhood Diabetes - Arrivals at The Beverly Hilton in Beverly Hills, California, United States. (Photo by Jeff Kravitz/FilmMagic)
NEW YORK - FEBRUARY 05: Actress Tori Spelling attends the Ann Bowen Fall 2005 show during Olympus Fashion Week at Bryant Park February 5, 2005 in New York City. (Photo by Thos Robinson/Getty Images)
Tori Spelling during American Eagle Outfitters 'Live Your Life' Awards Celebration at American Eagle Outfitters Flagship Store in New York City, New York, United States. (Photo by Jemal Countess/WireImage)
Tori Spelling during VH1 Big in '05 - Red Carpet at Sony Studios in Los Angeles, California, United States. (Photo by Jeff Kravitz/FilmMagic)
NEW YORK - MARCH 31: Tori Spelling (L) and Dean McDermott (R) attend Tori Spelling promoting her new VH1 scripted comedy 'So Notorious' at XL Lounge March 31, 2006 in New York City. (Photo by Amy Sussman/Getty Images)
Tori Spelling (Photo by Dimitrios Kambouris/WireImage)
Tori Spelling at Principessa during 2007 Silver Spoon Golden Globes Suite - Day 2 in Los Angeles, California, United States. (Photo by Matthew Simmons/WireImage for Silver Spoon (formerly The Cabana))
NEW YORK - NOVEMBER 09: Tori Spelling and Dean McDermott arrive at the 2007 Out 100 Awards at Cipriani Wall Street on Novemeber 9, 2007 in New York City. (Photo by Dimitrios Kambouris/WireImage)
LOS ANGELES, CA - NOVEMBER 09: Tori Spelling and daughter Stella at the launch of TotSpot.com sponsored by Little Tikes and benefiting Generation Rescue at the Treehouse Social Club. (Photo by Chris Polk/FilmMagic)
NEW YORK - FEBRUARY 19: Actress Tori Spelling poses backstage at Christian Siriano Fall 2009 during Mercedes-Benz Fashion Week at The Salon in Bryant Park on February 19, 2009 in New York City. (Photo by Steve Mack/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 27: Actress Tori Spelling arrives at the 19th Annual Elton John AIDS Foundation's Oscar viewing party held at the Pacific Design Center on February 27, 2011 in West Hollywood, California. (Photo by Frederick M. Brown/Getty Images)
HOLLYWOOD, CA - JULY 16: Actress Tori Spelling attends the 29th annual Gay & Lesbian Film Festival's premiere of 'Hoarders: Untold sTORI' at John Anson Ford Amphitheatre on July 16, 2011 in Hollywood, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - APRIL 21: Tori Spelling attends the 17th Annual Los Angeles Times Festival Of Books - Day 1 at USC on April 21, 2012 in Los Angeles, California. (Photo by Jonathan Leibson/FilmMagic)
BEVERLY HILLS, CA - MAY 10: Actress Tori Spelling and children Finn Davey McDermott (L) and Hattie Margaret McDermott attend The Helping Hand of Los Angeles' Annual Mother's Day Luncheon at the Beverly Hills Hotel on May 10, 2013 in Beverly Hills, California. (Photo by David Livingston/Getty Images)
NEW YORK, NY - JUNE 24: Tori Spelling attends the 'Mystery Girls' Screening hosted by The Moms at Park Avenue Screening Room on June 24, 2014 in New York City. (Photo by John Lamparski/WireImage)
CULVER CITY, CA - AUGUST 22: Tori Spelling attends the LG 'Fam To Table' series at The Washbow on August 22, 2015 in Culver City, California. (Photo by Jason LaVeris/FilmMagic)
The 42-year-old admitted that the revelation did change the dynamic of her mother-daughter relationship a bit. "I explained it to her, and she was fine. Now she asks questions," she told Dunham. "She says, 'Are you going to get them replaced because you said they're recalled and you need to get a new one?' She's very mothering, my 7 year old."
Spelling also spoke about her own mother, Candy Spelling, and how she worried about having daughters because of their "complicated" relationship. "When I found out I was pregnant with a daughter, I thought, 'F**k. I am screwed,'" she said. "I cried when I found out I was carrying a daughter. I didn't know what to do. I thought, 'I'm going to repeat the past. This is just the way it goes.'"
She added, "I would always ask my dad [Aaron Spelling], 'Why is mom like this to me?' He would tell me, 'She had a really bad relationship with her mom. Her mom was like that with her. There was a lot of competition. It was complicated.'"
The mother-of-four now makes a "conscious effort" not to pass down any bad parenting habits. "I just reminded myself every day that I'm not my mom," she said. "I'd think, 'What would make me different? What's my instinct of what would make that different?' My instinct was touch. I just wanted to hug her and hold her and tell her how beautiful she was and make eye contact."
When ET caught up with Spelling and her husband, Dean McDermott, earlier this month, the couple was eager to share what a good place their marriage and family were in at the moment. Despite past infidelity and marriage woes, Spelling is most proud of "the growth" her and McDermott have experienced.
"It just gets better, and I think when you go into a relationship, at least for me, you have all these fairy tale expectations. What it should be or shouldn't be, where it's going to go and where it's going to plateau," she explained. "You get to that point where [it's like], 'Wow, this is amazing' on a different level of what I ever expected."