full size Katy Perry Debuted a New Haircut at the Change Begins Within Benefit on Dec. 3, 2011 in Los Angeles
Credit: Jason Merritt / Getty Images

Katy Perry changes hairstyles faster than her songs climb the Billboard charts.

While most of her 'dos are a little too outrageous for our taste, she really impressed us when she arrived at the Change Begins Within benefit on December 3, 2011 with a more subdued face-framing bob.

Katy, who wore a studded Versace dress, was all smiles as she walked the red carpet arm-in-arm with hubby Russell Brand. Guess frequent makeovers are the key to a strong marriage!