50 Best Celebrity Makeovers of All Time

When you're always in the spotlight, sometimes you need a style reinvention. These celebrities have major transformations, changing everything from their fashion sense to their hair color. Get inspiration from these celebrity makeovers that are worthy of applause.

Rooney's cascading brunette curls and sheer top adorned with an oversized bow and lace relay her feminine fashion sense at the 2010 Youth in Revolt premiere.

Video: Golden Globe nod surprises 'Dragon Tattoo' star >

Rooney has gone to the dark side at the The Girl with the Dragon Tattoo premiere. Her new inky cut and red lips are full of naughty sex appeal.

Video: Golden Globe nod surprises 'Dragon Tattoo' star >

Jenny from the Block was a brunette with bouncing curls at the 1997 premiere of Anaconda. The dark lip color was a temporary blunder for the dancer-turned-singer-turned-actress.

Video: American Idol judges before they were famour >

Three marriages and twins later, J.Lo is taking a more natural approach to makeup, but she still has a weakness for sheer red carpet attire at the 2011 American Music Awards.

Video: JLo on her ex: 'There is real love there' >

At the 2008 premier of The Tale of Despereaux, Emma is still the innocent Hermoine from the Harry Potter epic with her sideswept bangs, shoulder-length curls, and basic makeup look.

Video: Life after Harry Potter >

Emma shows she is all grown up at the premiere of Harry Potter and the Deathly Hallows: Part 2. With the end of her childhood acting career, she has opted for an edgier look with a short brunette crop and eye makeup that is both glittering and smoky.

Video: Emma Watson's style >

When it comes to her hair, Katy Perry has wandered the color spectrum from blue to pink. Here she is wearing a reserved black bob with a blunt bang at the 2009 Palais des Festivals in Cannes. But her bright lip color and stand-out lashes still grab attention.

At the launch of her perfume, MEOW!, Katy has chosen a demure blonde look that suggests her days as a color junkie are through (but with a hint of blue still visible in this do we doubt it!)

Nicole showcased her love of headwear, highlights and tube tops at the 2002 Playstation pre-Superbowl party. Her grunge style means nothing but trouble.

NNow, Nicole has come into her socialite persona and rocks a demure blonde bob with bangs at her House of Harlow 1960 holiday pop-up shop.