Katy Perry's Drastic Hair Makeover

Peace out, bright pink hair!

Katy Perry is celebrating the wrap of her eight month-long California Dreams tour with a fresh, new makeover.

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At the Change Begins Within Benefit Celebration in Los Angeles Saturday, the singer debuted a dramatically short new haircut and a baby pink color that looks much lighter than the bubblegum hue she sported at the 2011 American Music Awards November 21.

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With her hubby Russell Brand at her side, the star covered up in a white knee-length Versace sheath with gold embellishments, matching heels and Stella & Dot's Renegade Bracelet at the event benefiting filmmaker David Lynch's foundation for Transcendental Meditation.

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Just this year, Perry, 27, has underwent several hair color changes. In June, the brunette beauty dyed her hair a fiery red, which was a result of a botched dye job. Weeks later, she traded auburn for blonde and in August, debuted a punk-rock "lavender" color.

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