By Breaking Celebrity News Staff

Many celebrities had an up-and-down year -- especially when it came to their waistlines!

In our special year-end look back at 2012, ON YOUR Breaking Celebrity News, we’re taking a look back at some of Hollywood’s biggest “Winners” and “Sinners” when it came to their ever-changing bodies.

We begin with the “Sinners” and Christina Aguilera: The Beautiful singer flaunted a fuller figure throughout the year, culminating in an outing at November's American Music Awards where her curves were on full display. “The challenge I’ve always had is being too thin,” Christina told Lucky magazine, “so I love that now I have a booty and obviously I love showing my cleavage.”

Demi Moore

The Striptease star, still licking her wounds after a painful breakup from Ashton Kutcher -- and his subsequent romance with Mila Kunis -- alarmed friends and loved ones, showing a gaunt figure at times throughout 2012.

Ali Lohan

Lindsay Lohan's younger sister, an aspiring model, cut such a slim figure, rumors of an eating disorder sprouted up in the media.