Celebrity Makeovers; Stars Who Have Changed Their Look (PHOTOS)

A new haircut, a little weight loss and some trendy clothes are just a few things celebrities can change to step up their look and transform themselves from mediocre stars to full-fledged hotties.

Take a look at some of Hollywood's hottest makeovers. From Jennifer Hudson and Jonah Hill's dramatic weight losses to Kate Gosselin ditching her spikey hairstyle, some stars have used their celebrity status to drastically alter their appearance. Here are a number of stars we think have changed for the better.

PHOTOS:

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• Nicole 'Snooki' Polizzi - 2010

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• Nicole 'Snooki' Polizzi - 2011

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• Gwen Stefani - 2001

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• Gwen Stefani - 2011

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• Kate Gosselin - 2009

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• Kate Gosselin - 2011

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• Jennifer Hudson - 2006

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• Jennifer Hudson - 2011

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• Jason Alexander - 2005

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• Jason Alexander - 2011

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• Jenni 'JWoww' Farley - 2010

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• Jenni 'JWoww' Farley - 2011

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• Nicole Richie - 2003

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• Nicole Richie - 2011

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• Jennifer Lopez - 2000

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• Jennifer Lopez - 2011

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• Carrie Underwood - 2005

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• Carrie Underwood - 2011

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• Ricky Martin - 1994

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• Ricky Martin - 2011

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• Justin Timberlake - 2001

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• Justin Timberlake - 2011

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• Jonah Hill - 2008

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• Jonah Hill - 2011

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