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By Leah OrnsteinRadar 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 and wackiest designer duds – and RadarOnline.com has all the wardrobe winners and sinners in a special photo feature.

PHOTOS: The Best, Worst & Wackiest Fashions At The 2012 Grammy Awards

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!

The Duchess really outdid herself this time – and not in a good way! Fergie, who is always a wild card on the red carpet, was impossible to miss in a bright orange lace Jean Paul Gaultier gown that exposed her black lingerie to the max!

PHOTOS: Stars Arrive At The 2012 Grammy Awards

As for wacky, there were several crazy contenders, but it was an armed and dangerous singer who we have never heard of that really got our attention. Sasha Gradiva, known professionally as SASHA, accessorized a pink princess gown with an arm full of weapons. Cyborg chic? More like cyborg freak. Not too mention, entirely inappropriate.

For all the rest of the best, worst & wackiest dressed stars of the 2012 Grammy Awards, click here.

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