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Nicole Richie has gone back to the bob! The star took to Instagram to debut her new style—a shorter take on the long bob she wore almost a year ago. Since then, Richie grew out the cut and experimented with darker strands, but opted to go back to her trademark gold highlights. “Dark hair accentuates my green eyes, but dyeing it was too damaging!” she told us in our August issue. We want to know: What do you think of her shorter cut? Tell us!

See more celebrity hair makeovers in our gallery.

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• See Nicole Richie’s Many Hairstyles — On You!
• Found It! Nicole’s Must-Have Hair Product
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It’s back to bangs for Kim Kardashian! The mother-to-be took the style on a test drive a few times last year — she frequently veered between wearing long layers and clip-on fringe – but made the commitment to a more permanent version yesterday. “I cut my bangs for real!” Kardashian wrote on her blog. Although not as blunt as the faux styles she previously wore, we think Kim’s side-swept version suits her. Do you like her new look? Tell us in the comments!

See more celebrity hair makeovers in our gallery.

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• See Kim Kardashian’s Hair — On You
• Kim Kardashian’s Baby Bump Style
• The Secret to the Kardashian Nude Lip

Ashley Greene has been making some dramatic hair changes lately (hello fiery red!), and, you’ve been loving every style! Over 14,000 of you tried on Greene’s strands this week, making her our top-ranking celebrity in our Hollywood Makeover Tool! Curious to see which of her many looks flatters you? Simply upload your picture to see yourself in every dynamic cut and color worn by the star. (We even included her choppy Twilight bob among the styles, just in case you could use some Esme Cullen inspiration.) Head over to our Hollywood Makeover Tool to get started! 

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• Found It: Ashley’s Shiny Pink Lip Color
• Amp Up Your Hair Color Now
• See Ashley’s Breaking Dawn 2 Premiere Hair

Happy 27th birthday, Amanda Seyfried! The blonde bombshell and star of the upcoming Les Miserables turns 27 today. Celebrate her big day by giving yourself an Amanda Seyfried makeover in our Hollywood Makeover Tool. Simply upload your picture to virtually try on on her enviable long tresses, no extensions required. Then, be sure to share the result with your friends on Facebook and Twitter. Click the link below to get started!

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• Amanda’s Best Looks Ever!
• Amanda Seyfried’s High Shine Hair
• New Clips From Les Miserables

Ashley Greene was our top try on this week, with over 17,000 of you giving her sultry styles a whirl in our Hollywood Makeover Tool. With 13 different styles to choose from, why not try them all? Simply upload your photo to try the look—no salon visit necessary! Plus, be sure to share your makeover with friends on Facebook and Twitter.

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•  Found It: Ashley’s Shiny Pink Lip Color
•  All About Ashley’s Bold Red Hair Color
•  Ashley’s Favorite Label: Antonio Berardi

January Jones is a brunette! The Mad Men actress switched up her look for fall, trading in her signature blonde locks for a darker hue. And this isn’t the first time this year the Jones has changed her hair color drastically—the actress debuted rose gold highlights in March before making a complete color change in June when she debuted a fiery red mane. Do you like Jones’ new color? Tell us in the comments!

Plus, see more celebrity hair makeovers in our gallery!

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• January In One of Fall’s Biggest Trends: Prints
• January Jones’ Zac Posen Emmy Dress
• Jones and Son Xander at the Pumpkin Patch