There were several pop stars and musicians who earned an F on their style report card at the 2012 American Music Awards, which took place last night (Nov. 18) in L.A. Between some problematic prints and textural pairings, there were more than a few major fashion faux pas. Here are five of the worst.

Christina Aguilera

While Christina Aguilera's bob, a take on Michelle Pfeiffer's coif in 'Scarface' and a look that Gwen Stefani emulated a few years ago, was fresh and blunt, the singer's dress was ill-fitting. It hugged her curvy figure in all the wrong ways, making her appear fuller and more out of shape than she actually is. The dip-dye fabric was also unflattering, and despite the deconstructed look, it felt a little too casual. Add that to a serious bronzer OD, and the overall look was a mess.

Xtina
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Pink

We love Pink and her suicide roll was retro and fun, but her dress was a mix of a 'Gladiator' shield on the top and Greek goddess pleats on the bottom. The drab color resembled dirty day-old bath water and it wasn't her best look -- which was a bummer, since Pink usually takes risks that lead to fashion payoffs.

Pink
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PSY

K-Pop singer and YouTube sensation PSY is usually hit or miss, and last night was a definite miss. He mixed too many textures -- a leather jacket, sequined pants, wing-tipped shoes -- and it was overkill. The fabrics competed with each other and looked tacky, 'Gangnam Style' or not.

Psy
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Kelly Rowland

Former Destiny's Child member Kelly Rowland, who has killer gams, picked a frock that looked like a marble kitchen counter sample. It's stiff and heavy, and it didn't feel festive or fun at all. The only upside was that it did show off her to-die-for figure, but overall, it was a giant "meh."

Kelly
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Jordin Sparks

Former 'American Idol' winner Jordin Sparks' outfit was all wrong on multiple levels. We could do a 10-point inspection and detail what went awry -- from the sheer sleeves to the mixed pattern to the pattern blocking to the busy print, it was just a mess. Nothing about this dress is cohesive or gels.

It's a shame, since Sparks is a pretty girl who recently shed weight and has a bod that she should show off. She was probably going for exotic, but ended up with a gypsy potato sack gone wrong.

Jordin
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