By Leah Ornstein - Breaking Celebrity News Style & Beauty Editor

Music’s biggest acts were dressed to rock and shock at the 54th Annual Grammy Awards on Sunday night in Los Angeles, hitting the red carpet in the best, worst & wackiest designer duds – and Breaking Celebrity News has all the wardrobe winners and sinners in a special photo feature.

Looks like Katy Perry has the blues – but in the best way possible! The stunning songbird, who is in the process of amicably divorcing her husband of a little over a year, decided to leave the shock factor and home and glammed up in a sky blue Elie Saab Spring 2012 Couture gown, which complimented her bright blue hair!

Other best dressed babes of the night included Rihanna, who looked incredibly sexy in a very revealing Giorgio Armani gown, which she paired with Neil Lane bling and Christian Louboutin heels, and Taylor Swift, who rocked a tres mature, back baring, Zuhair Murad Couture gown, also with Neil Lane bling.

The Duchess really outdid herself this time – and not in a good way! Fergie, who is always a wi