By Leah Ornstein - Breaking Celebrity News Style & Beauty Editor

Style chameleon Katy Perry hit the red carpet of the 2011 MTV Video Music Awards on Sunday night, debuting a brand new hair color – and Breaking Celebrity News has all the exclusive details about her tress transformation from the woman behind her look – celebrity hair colorist Rita Hazan.

“It was such an exciting challenge to custom-create Katy’s color for her big reveal at the VMA’s,” said Hazan, who has transformed the locks of everyone from Jessica Simpson to Jennifer Lopez.