Grammy Awards 2010: Best/Worst Style

LADY GAGA
Taylor Swift's sparkles better watch out! Gaga made a show-stopping appearance in a super-galactic getup, custom made by Giorgio Armani. GRADE: A+

LEA MICHELE
The Glee star and Grammy presenter made a last-minute dress swap, and her flirty Romona Keveza mini couldn't have been a better runner-up. Grade: A

NICOLE KIDMAN
In a sea of rocker chic, Kidman played the part of glamorous movie star wife perfectly in a body-skimming Prada gown. Grade: A

PINK
The singer pulled off the impressive feat of meshing evening-gown glamour and pure rock 'n roll with this ink-dipped mermaid gown. Grade: A

KERI HILSON
Leaving the apocalyptic fashion to others, the Best New Artist nominee went for straight-up pretty in this sweet Dolce & Gabbana number. Grade: A-

FERGIE
The singer made an impact with the striking cobalt blue hue of her mini, but the overly simple design could have used a little more boom boom pow. Grade: B+

MILEY CYRUS
She could've done without the many (many) necklaces, but the pint-size star nailed the proportions of her marbleized Herve Leger mini. Grade: B

TAYLOR SWIFT
In not-so-shocking tales from the red carpet, the gajillion-times nominated singer chose sequins?this time in teal. But the Kaufman Franco sheath lost major points for its off-the-shoulder style, which aged Swift by about 20 years. Grade: B-

CARRIE UNDERWOOD
Normally a fixture on the best-dressed list, the country singer seemed to be swimming in her shapeless white gown. In the immortal words of SNL's Gap Girls, she just needed to cinch it. Grade: C

BEYONCÉ
We're hoping that the hieroglyphics on Beyoncé's dress offer some sort of explanation for why she chose this unflattering gown. But nothing could explain her My Little Pony sparkle mane. Grade: D+

KATY PERRY
Nude pantyhose are already a fashion no-no, but nude pantyhose masquerading as an evening gown? That's a fashion disaster. (And the random gold bindi only seals the deal.) Grade: D

RIHANNA
The holidays are long gone, but that didn't stop Rihanna from accenting her Elie Saab gown with Santa Claus' beard. Grade: D

KE$HA
The hair and makeup may be Ke$ha's signature garbage-chic, but the gold flapper mini by Nicolas Jebron looked more sloppy Vegas showgirl. Grade: D-

CIARA
She may have been going for futuristic, but we think this complicated Givenchy best belongs in the past... where we never have to look at it again. Grade: F

BRITNEY SPEARS
Perhaps taking a cue from Lady Gaga's no-pants policy, Spears tried to capitalize on the trend with this Dolce & Gabbana ensemble. Wardrobe fail. Grade: F

More Grammys coverage from EW:
16 Grammy performances: We grade 'em
Grammy style: Rate 21 looks