See Kelly Osbourne’s Shocking Transformation Over the Years

Today is Kelly Osbourne's 31st birthday!

The TV host has been in the spotlight since she was a child, but really rose to fame when her family's MTV reality series The Osbournes started in 2002. Over the past decade, Kelly's weight has fluctuated and her style has definitely evolved.

Click through the gallery to see her extreme transformation over time.

1 of 13

Oct. 2001

"We were very different [from the Kardashians]," Kelly said. "They are the most beautiful family in the world and we’re all just a bit rough around the edges but in the best way possible."

2 of 13

Aug. 2002

"I'm an emotional eater. When I get upset, my diet goes out the window," she said.

3 of 13

April 2003

“I took more hell for being fat than I did for being an absolute raging drug addict. I will never understand that.”

4 of 13

April 2005

"It's funny that all these goths paint their faces with such white make-up and that is the actual color of my skin, I am that pale!"

5 of 13

May 2006

"I call myself a FFP: former fat person, and when you're an FFP, you will always see in yourself what people used to bully you for.," she said.

6 of 13

May 2007

"People always assume, “Her life has been so easy!” But it’s not, and it’s all in here, and it’s all the truth. I’m not trying to say, “Well, my life has been s–t, so you got it wrong," she told Entertainment Weekly. I’ve had a f—ing amazing, incredible, fruitful, at times yes, miserable life… but I would never change my life for anything."

7 of 13

April 2009

"And when I was 15 I had people writing about how fat and ugly they thought I was. They still do it now and it still hurts, but not as much as it did back then," she told the Mirror. "I remember feeling like I just wanted to crawl into a hole, and when I got home I cried for about two weeks."

8 of 13

Aug. 2010

She continued, "Comments like that led me to drugs and alcohol. When you’re 15 and you’re suddenly faced with, ‘you’re fat, you’re ugly, you’re just a celebrity’s daughter’, you’re like, ‘I never wanted to be famous.'"

9 of 13

Feb. 2011

"I feel good in my own skin because I've accepted the fact that I'm me. That's what's so great about being alive and being on this planet: Everybody's different."

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March 2012

"I never thought in a million years I'd be that healthy girl who wakes up every morning to exercise," she told [Shape](. After being called 'cherubic and chubby,' I'm rocking a bikini!"

11 of 13

Feb. 2013

“I’m the most secure and content I’ve ever been. Though I’m still very self-deprecating: I look in the mirror sometimes and I feel like going back to bed. Everyone has good days, everyone has bad days,” she told Self magazine in 2013. “When you change your body, you start to get selfish. You’re like, Oh, but that’s still fat and that’s still gross and why can’t I look like that? To stop myself I have to look at how far I’ve come. I’ve learned how to eat right and look after myself."

12 of 13

Oct. 2015

"I have more fun with it because I don’t care what people think, I don’t follow trends. I mean, I walked around with purple hair for two years getting called a witch and now everyone’s doing it," she told Refinery 29.

13 of 13

Feb. 2017

"Women are so unforgiving of themselves. We don't recognize our own beauty because we're too busy comparing ourselves to other people," she told Glamour.