I gotta say it, that Katy Perry has GOOD TASTE! In 2009 Perry filmed her video to "Waking Up In Vegas" and she donned an amazing Bob Mackie haute couture ensemble. Being in Las Vegas it makes perfect sense for her to be rockin' that feather headdress. After all the quintessential showgirl has been defined by the Bob Mackie designed show "Jubilee", which, I might add, has been running on the Las Vegas Strip since 1981. Amazing design NEVER goes out of style.
Speaking of timeless style, the gown and headdress Katy wore came from Bob Mackie's 2002 couture show "To Broadway, With Love." The gown was a redesign of the classic Broadway character Dolly Levi from "Hello Dolly." The original ensemble did not have the oversized feather boa, but I completely understand Perry's choice to include it in her look. She looks AMAZING!