'The Hills' alums Spencer Pratt and Heidi Montag are expecting their first child

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Heidi Montag and Spencer Pratt are expecting!

The former "The Hills" stars announced the exciting news that they're pregnant with their first child via a cover story on this week's issue of Us Weekly -- naturally.

SEE ALSO: MTV reality star Clay Adler commits suicide at 27

Montag, 30, and Pratt, 33, who got married in 2009 while on the hugely popular MTV reality show, had only been trying to conceive for a month when Montag found out she had a bun in the oven.

"I wanted a baby three years ago," Montag confessed to Us. "Spencer was a little hesitant. Then one thing after another came up. We had work obligations, like 'Celebrity Big Brother' in the U.K., which I did not want to be pregnant for. I'm actually really thankful we waited. I thought I was ready in my twenties, but with everything we had going on, it just wouldn't have been a good situation for us."

See photos of Heidi Montag and Spencer Pratt together:

34 PHOTOS
Heidi Montag and Spencer Pratt together
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Heidi Montag and Spencer Pratt together
HOLLYWOOD, CA - APRIL 27: Heidi Montag and Spencer Pratt attend Hollywood Life Magazines 10th Annual Young Hollywood Awards at Avalon on April 27, 2008 in Hollywood, CA. (Photo by BRIAN LINDENSMITH/Patrick McMullan via Getty Images)
LOS ANGELES, CA - JUNE 1: Heidi Montag and Spencer Pratt attend The 2008 MTV Movie Awards - Arrivals at Universal City on June 1, 2008 in Los Angeles, CA. (Photo by ANDREAS BRANCH/Patrick McMullan via Getty Images)
Heidi Montag and Spencer Pratt (Photo by Donato Sardella/WireImage)
***EXCLUSIVE*** MTV's The Hills cast members Heidi Montag, left, and Spencer Pratt attend Montag's 21st birthday party at LAX Nightclub on September 15, 2007 in Las Vegas, Nevada. ***Exclusive*** (Photo by Chris Weeks/WireImage)
HOLLYWOOD, CA - OCTOBER 16: Actors Spencer Pratt and Heidi Montag attend a press conference announcing Taco Bell's efforts to raise awareness in suport of World Hunger Relief Week at a Taco Bell restaurant on October 16, 2007 in Hollywood, California. (Photo by Vince Bucci/Getty Images for Taco Bell)
HOLLYWOOD - SEPTEMBER 26: Actress Heidi Montag and actor Spencer Pratt arrive at the US Weekly Hot Hollywood party at Opera on September 26, 2007 in Hollywood, California. (Photo by Gregg DeGuire/WireImage)
LAS VEGAS - NOVEMBER 09: Television personalities Spencer Pratt and Heidi Montag arrive at an evening at Jet Nightclub hosted by Heidi Montag and Spencer Pratt at Jet Nightclub on November 9, 2007 in Las Vegas, Nevada. (Photo by Jesse Grant/WireImage)
TORONTO - JANUARY 19: Heidi Montag and Spencer Pratt arrive to host Rockwood Party on January 19, 2008 in Toronto, Canada. (Photo by Arthur Mola/WireImage)
(EXCLUSIVE, Premium Rates Apply) LOS ANGELES, CA - FEBRUARY 12: ***EXCLUSIVE*** Spencer Pratt and Heidi Montag at EA's 'Burnout Paradise' pre-Valentine's Day lounge on February 12, 2008 in Los Angeles, California. (Photo by Chris Polk/WireImage)
SCOTTSDALE, AZ - FEBRUARY 01: TV personalities Heidi Montag (L) and Spencer Pratt attend MAXIM Magazine kicks off Super Bowl weekend at Grand Opening of Stone Rose at the Fairmont Scottsdale Princess Resort on February 1, 2008 in Scottsdale, Arizona. (Photo by Michael Buckner/Getty Images)
BEVERLY HILLS, CA - MARCH 22: Heidi Montag (L) and Spencer Pratt (R) attends the Perez Hilton's 30th Birthday Celebration at the Beverly Wilshire Hotel on March 22, 2008 in Beverly Hills, California. (Photo by Noel Vasquez/Getty Images)
LOS ANGELES, CA - JUNE 08: Television personalities Heidi Montag and Spencer Pratt at the A Time for Heroes Celebrity Carnival Sponsored by Disney benefiting the Elizabeth Glaser Pediatric AIDS Foundation at the Wadsworth Theater on June 8, 2008 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
JUAN CARLOS/�2008 RAMEY PHOTO NO EUROPE/ UK ok Los Angeles, July 16, 2008 HEIDI MONTAG and SPENCER PRATT out to Cuvee Restaurant on Robertson. The pair stopped and posed with some young fans. PGjc6 (Photo by Philip Ramey/Corbis via Getty Images)
LOS ANGELES, CA - JULY 16: Actress Heidi Montag and actor Spencer Pratt attend The Nancy Davis Foundation's Race To Erase MS Orange Pass benefit on July 16, 2008 at the Melrose Shopping District in Los Angeles, California. (Photo by Vince Bucci/Getty Images)
LOS ANGELES, CA - OCTOBER 23: TV personalities Spencer Pratt and Heidi Montag attend 'SVEDKA Vodka Presents Hollywood, DC: Lights! Camera! Election!' at the World of Wonder Storefront Gallery on October 23, 2008 in Hollywood, California. (Photo by John Shearer/WireImage)
LOS ANGELES, CA - DECEMBER 02: Spencer Pratt and Heidi Montag arrive at Cedar-Sinai's Annual 'Road To A Cure' Gala held at the Hyatt Regency Century Plaza on December 2, 2008 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
WESTWOOD, CA - NOVEMBER 10: Actor Spencer Pratt and actress Heidi Montag attend the Autism Speaks Hosts the 6th Annual Acts of Love Celebration, held at the Geffen Playhouse on Monday November 10, 2008 in Westwood, California. (Photo by Mathew Imaging/WireImage)
�2009 GAMEPIKS Spencer Pratt and Heidi Montag sit courtside as they attend the Los Angeles Lakers/Golden State Warriors NBA game at Staples Center in Los Angeles on March 19, 2009. The Lakers defeated the Warriors 114-106. XYZ (Photo by Philip Ramey/Corbis via Getty Images)
LOS ANGELES, CA - MARCH 28: TV personalities Heidi Montag and Spencer Pratt arrive at Perez Hilton's 'OMFB' 31st Birthday Party held at The Viper Room on March 28, 2009 in West Hollywood, California. (Photo by Angela Weiss/Getty Images)
�2009 RAMEY PHOTO /XPUSA US ONLY! APRIL 8TH 2009 - LOS ANGELES - USA STARS OF MTV'S 'THE HILLS' SPENCER PRATT & HEIDI MONTAG FILMING AT A CHURCH IN PASADENA. SPENCER THEN PUMPED GAS, BEFORE DRIVING TO CAFE MED ON SUNSET PLAZA FOR A ROMATIC LUNCH. THEY STOPPED EN ROUTE FOR A PHOTO-OP BENEATH A GIANT 'THE HILLS' BILLBOARD ON SUNSET BLVD. XPUSA/NM1 (Photo by Philip Ramey/Corbis via Getty Images)
�2009 RAMEY PHOTO LOS ANGELES 4/29/09 Heidi Montag and Spencer Pratt return to LAX from their Cancun, Mexico honeymoon wearing facemasks to protect them from the Swine Flu epidemic. PR (Photo by Philip Ramey/Corbis via Getty Images)
�2009 RAMEY PHOTO Beverly Hills, California, May 10, 2009 Heidi Montag and hubby Spencer Pratt take Grandma to Spago for Mother's Day. GV (Photo by Philip Ramey/Corbis via Getty Images)
BEVERLY HILLS, CA - SEPTEMBER 18: *** EXCLUSIVE ***: Spencer Pratt and Heidi Montag attend the Stander Launch Party at The Playboy Mansion on September 18, 2009 in Beverly Hills, California. (Photo by Michael Bezjian/WireImage)
LOS ANGELES, CA - OCTOBER 02: Heidi Montag and Spencer Pratt shop at Louis Vuitton on October 02, 2009 in Los Angeles, California. (Photo by Marcos Vasquez/BuzzFoto/FilmMagic)
TUSTIN, CA - OCTOBER 15: Actors Heidi Montag and Spencer Pratt attend the STRIKE OC Fall Celebration at Strike Orange County on October 15, 2009 in Tustin, California. (Photo by Robert Benson/WireImage)
Spencer Pratt and Heidi Montag attend a Halloween party at PURE Nightclub hosted by Heidi Montag on October 30, 2010 in Las Vegas, Nevada.
BOREHAMWOOD, ENGLAND - JANUARY 25: Heidi Montag and Spencer Pratt are evicted from the Celebrity Big Brother House at Elstree Studios on January 25, 2013 in Borehamwood, England. (Photo by Mike Marsland/WireImage)
BOREHAMWOOD, UNITED KINGDOM - JANUARY 03: Heidi Montag and Spencer pratt enter the Celebrity Big Brother House at Elstree Studios on January 3, 2013 in Borehamwood, England. (Photo by Dave J Hogan/Getty Images)
LAS VEGAS, NV - AUGUST 31: Television personalities Spencer Pratt (L) and Heidi Montag arrive at the Crazy Horse III Gentlemen's Club to celebrate Pratt's 30th birthday on August 31, 2013 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
THE MILLIONAIRE MATCHMAKER -- 'Stephanie Pratt, Spencer Pratt, Heidi Montag, Kari Whitman' Episode 805 -- Pictured: (l-r) Patti Stanger, Heidi Montag, Spencer Pratt -- (Photo by: Bravo/NBCU Photo Bank via Getty Images)
LOS ANGELES, CA - MAY 13: Heidi Montag and Spencer Pratt are seen on May 13, 2015 in Los Angeles. (Photo by GP/Star Max/GC Images)
NEW YORK, NY - JANUARY 05: Heidi Montag and Spencer Pratt are seen arriving at 'Today Show' on January 5, 2015 in New York City. (Photo by Alessio Botticelli/GC Images)
BOREHAMWOOD, ENGLAND - JANUARY 27: Heidi Montag and Spencer Pratt are the 8th housemates evicted from the Celebrity Big Brother house at Elstree Studios on January 27, 2017 in Borehamwood, England. (Photo by Karwai Tang/WireImage)
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Now, with "more life experience," the pair is ready to grow their family at their home away from the spotlight in Santa Barbara, Calif. Speidi, as the couple was known at the height of their fame during their time on "The Hills," don't know if they'll find out the gender of their baby before it's born, though they're both in agreement on what they want the sex to be.

"I'm hoping for a boy," Montag confessed. "I've always wanted a boy first --"

"Notice she says 'first,'" Pratt interjected.

"Yep. First! I'd love to have a son and for the Pratt name to continue," she finished.

Montag is 12 weeks pregnant and revealed her due date to be October 19.

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