So let’s take a closer look at some of these celebrities and their major transformations.

Kelly Osbourne

Kelly Osbourne was onthe ninth seasonofDancing with the Starsandearned third placeoverall.

Throughout the season, Osbourne worked hard to make it to the next week.

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These efforts paid off.

The star lost weight throughout the competition, but she gained something even more important new confidence.

And Osbourne didn’t stop when the competition was over.

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Her dancing partner Louis van Amstel kept her inspired.

She shared during the interview just how quickly she saw results from dancing.

I’m feeling great.

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I’m putting in the work.

I’m getting a lot of sleep.

Everything is on the backburner right now.

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Dancing is my priority."

Marie Osmond

Marie Osmond gave everything she had on the dance floor.

She continued to push herself and saw success,reaching 3rd placein season 5 ofDancing with the Stars.

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Working so hard, Osmond saw a major body transformation on the show, losing over 30 pounds.

I’ve lost about five inches off my hips and five inches off my waist….

I’ve added muscle mass and I am much more toned.

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The show should be called ‘Dancing With the Starved’!"

Amber Rose

Amber Rose was onDancing with the Starsfor six weeks in season 23.

Even in that short time, the star saw a transformation, both physically and emotionally.

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On her podcast,Loveline With Amber Rose(viaE!

She later spoke of this on her podcast (viaE!

Rose moved forward, and left it all on the dance floor.

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Drew Scott

One star saw a major transformation before the show even began.

According toPeople, Drew Scott lost 27 pounds during just pre-show training.

But it’s not just the dancing that had an effect.

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Scott took this competition seriously, making huge changes to his eating habits as well.

I think most importantly, I’m feeling like me again."

The star lost 15 pounds during the season and said feeling like herself “means the world.”

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Kyle Massey

Kyle Massey came into the competition believing he could lose the weight.

I know I’m going to keep losing weight as long as I’m on this show."

And he was right.

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The star lost 18 pounds andlanded second placein the competition.

It’s going to be harder to stop the rhythm."

Cheryl Burke in particular saw transformations, by gaining and losing weight.

And unfortunately, being in the spotlight, she received negative feedback from fans due to these changes.

The dancer eventually lost weight, getting into a healthier lifestyle.

I’m completely healthy.

My curves are never going to go away.

Have I lost weight?

But not in an unhealthy way.

I want everyone to know that.

I love my fans.

But words are hurtful, especially coming from people you think always have your back."

I could do this.

I could do it,'….

I was a big guy, you know what I mean.

And I remember Joey being a big guy.

And he lost so much weight.

And he looked great."

Kirstie Alley

Kirstie Alley has one of the most well-known transformations.

Online, the star has lost 100 pounds over the years.

And what is a major cause for this?