Working in an industry -- whether it be modeling or acting -- that is focused on how one looks can be extremely challenging.

So it's not shocking that celebrities go under the knife for a few cosmetics adjustments. But surgery or fillers that might seem like good ideas at the time can later on look and feel different.

The below stars have admitted to getting cosmetic procedures done and have since changed their minds.

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Check out their stories below:

Chrissy Teigen

Chrissy Teigen attends the LA premiere of Netflix's 'Between Two Ferns: The Movie' at ArcLight Hollywood on September 16, 2019 in Hollywood, Calif.

Chrissy Teigen attends the LA premiere of Netflix's 'Between Two Ferns: The Movie' at ArcLight Hollywood on September 16, 2019 in Hollywood, Calif. (David Livingston/Getty Images)

Teigen revealed to Glamour U.K. in May 2020 that she now feels different about the breast implants she got when she was in her 20s and is having them removed.

"Yeah, I did my boobs when I was about 20 years old," the model said. "It was more for a swimsuit thing. I thought, if I'm going to be posing, laid on my back, I want them to be perky! But then you have babies and they fill up with milk and deflate and now I am screwed."

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On Twitter, she confirmed she would be going under the knife again. "They’ve been great to me for many years but I’m just over it. I’d like to be able to zip a dress in my size, lay on my belly with pure comfort! No biggie!" Teigen wrote.

Heidi Montag

Heidi Montag at the MTV Video Music Awards in 2018. 

Heidi Montag at the MTV Video Music Awards in 2018.  (Jamie McCarthy/Getty Images)

The reality TV star infamously got 10 plastic surgery procedures in one day but now she regrets some of them.

"I would never do it again and I never recommend it for anyone. … I kind of wanted a few enhancements and then it got out of hand," she told Access Hollywood in 2012.

"I wasn't told, really, the repercussions and what would happen, emotionally and physically, and the pain I would be in. I was kind of in shock," she said.

Kourtney Kardashian 

Kourtney Kardashian hosts The Grand Opening Of Sugar Factory At Hard Rock Hotel & Casino Atlantic City at Sugar Factory at the Hard Rock Hotel & Casino on July 28, 2018 in Atlantic City, New Jersey. 

Kourtney Kardashian hosts The Grand Opening Of Sugar Factory At Hard Rock Hotel & Casino Atlantic City at Sugar Factory at the Hard Rock Hotel & Casino on July 28, 2018 in Atlantic City, New Jersey.  (Dave Kotinsky/Getty Images for Sugar Factory American Brasserie)

The TV personality said getting breast implants in her early 20s was something she wouldn't do again if she had the chance.

"I had my boobs done but if I could go back, I wouldn't have done it. I was so cute before," she told Showbiz Spy in 2011 via People. "I've realized that I was made to look a certain way and I'm considering removing them."

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Gisele Bündchen

NEW YORK, NY - MAY 07:  Gisele Bundchen attends the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at Metropolitan Museum of Art on May 7, 2018 in New York City.   (Photo by Jackson Lee/Getty Images)

Gisele Bundchen attends the 2018 Met Gala.  (Jackson Lee/Getty Images)

The model told People magazine in 2018 that she wished she didn't have a boob job after having her two kids.

"I was always praised for my body, and I felt like people had expectations from me that I couldn't deliver," she admitted.

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"I felt very vulnerable, because I can workout, I can eat healthy, but I can't change the fact that both of my kids enjoyed the left boob more than the right. All I wanted was for them to be even and for people to stop commenting on it.

"When I woke up, I was like, 'What have I done?' I felt like I was living in a body I didn't recognize. For the first year, I wore [baggy] clothes because I felt uncomfortable," Bündchen said.

Courteney Cox

BEVERLY HILLS, CA - FEBRUARY 21: Courteney Cox attends the UCLA IoES honors Barbra Streisand and Gisele Bundchen at the 2019 Hollywood for Science Gala on February 21, 2019 in Beverly Hills, California. (Photo by Matt Winkelmeyer/Getty Images for UCLA Institute of the Environment & Sustainability)

Courteney Cox attends the UCLA IoES honors Barbra Streisand and Gisele Bundchen at the 2019 Hollywood for Science Gala on February 21, 2019 in Beverly Hills, Calif.   (Matt Winkelmeyer/Getty Images for UCLA Institute of the Environment & Sustainability)

In 2017, the "Friends" actress told New Beauty that after a certain point she became unhappy with the filler in her face.

"The next thing you know, you're layered and layered and layered. You have no idea because it's gradual until you go, 'Oh s--t, this doesn't look right.' And it's worse in pictures than in real life," she confessed.

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And since, Cox has had all the fillers dissolved. She said, "I've had all my fillers dissolved. I'm as natural as I can be. I feel better because I look like myself. I think that I now look more like the person that I was. I hope I do.

"Things are going to change," Cox continued. "Everything's going to drop. I was trying to make it not drop, but that made me look fake. You need movement in your face, especially if you have thin skin like I do."

Victoria Beckham

Victoria Beckham attends the British Vogue and Tiffany & Co. Fashion and Film Party at Annabel's on February 2, 2020 in London, England. 

Victoria Beckham attends the British Vogue and Tiffany & Co. Fashion and Film Party at Annabel's on February 2, 2020 in London, England.  (David M. Benett/Dave Benett/Getty Images)

In an open letter in 2017, the fashion designer wrote to her 18-year-old self for British Vogue, Beckham said that she regretted her decision to get breast implants.

"And I should probably say, don't mess with your boobs. All those years I denied it — stupid. A sign of insecurity. Just celebrate what you've got," she wrote.

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Beckham has since gotten then removed.

Kylie Jenner

Kylie Jenner attends the premiere of Netflix's 'Travis Scott: Look Mom I Can Fly' at Barker Hangar on August 27, 2019 in Santa Monica, Calif. 

Kylie Jenner attends the premiere of Netflix's 'Travis Scott: Look Mom I Can Fly' at Barker Hangar on August 27, 2019 in Santa Monica, Calif.  (Rich Fury/Getty Images)

The cosmetics queen admitted to Allure magazine in 2016 that she went a little too heavy with her lip fillers.

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"I definitely made my lips a little too big at one point," Jenner said. "I got excited and felt like I needed to do a lot. And then [my sisters] were like, 'Kylie, you need to chill.' And then I had to go back and have it fixed, and it was a crazy process."

Jennifer Grey

Actress Jennifer Grey poses backstage after the premiere of ABC's series

Jennifer Grey  (Reuters )

Looking back, the "Dirty Dancing" star regrets getting a nose job.

"I went in the operating room a celebrity — and came out anonymous," she told the Mirror in 2012. "It was like being in a witness protection program or being invisible. I'll always be this once-famous actress nobody recognizes ... because of a nose job."