The Black Eyed Peas, AMA winners for Favorite Pop/Rock Group, didn't even bother with cohesion of any kind with their outfits. But Will.i.am is committed -- he rocks the admittedly awesome Lego bit cover aesthetic of BEP's upcoming album, "The Beginning."

Rihanna kicks off the 2010 AMAs with a three-song medley, which began with the Barbadian songstress performing "Love the Way You Lie Pt. II," naturally, from a glowing "tree."

In preparation for her upcoming film debut in "Burlesque," Christina Aguilera gave a beautifully themed performance of music from the film.

Usher got the party started with his dance skills and sexy ladies during his AMAs performance.

Country-pop poster child Taylor Swift goes sleek with straight hair, but her disco-ball dress makes, literally, a flashy statement.

Enrique Iglesias, assisted by an entire drumline and rapper Pitbull, performed his single "I Like It" and the candidly raunchy "Tonight" at the 2010 AMAs.

Dressed like a Holiday Barbie, Katy Perry stripped down to a one-sie during her AMAs performance of "Firework."

Accompanied by a full choir, Justin Bieber performed "Pray," off his upcoming acoustic album, at the AMAs.

Ke$ha channels both punk and goth trends, but those eyebrows? Those are a trend of their own.

Looking more dapper than they did in their hey-days, a reunited Backstreet Boys/New Kids on the Block combo show that grown-up boy bands are sexy.

With a hair color that changes almost daily and a dress that appears to weigh quite a bit, Nicki Minaj is dedicated to her fabulously out-there look.

The recently-crowned CMA Performer of the Year, Brad Paisley, exhibited dominance over the AMAs as well, winning Favorite Country Male Performer at the 2010 AMAs.

Ne-Yo's performance of tracks from his new album, "Libra Scale," was an overload of dance moves and video clips.

With her long train, Miley Cyrus looks slightly bridal-y in white on the red carpet. Quite a difference from the covered-up, gothic look she rocked during her AMAs performance.

Dressed quietly in all black and rocking a straightened ponytail, Taylor Swift gave a sobering performance of "Back to December" at the AMAs.

A pregnant Pink gave a thrilling rendition of "Raise Your Glass," with a little help from a gaggle of performers including a cheerleading squad, acrobats and extreme athletes.

Ke$ha and her male back-up dancers rocked the similar outfits -- and blond mullets -- during her AMAs medley of "Take It Off"/"We R Who We R."

Rihanna matched her hair to her dress, posing with fellow lace-lover Heidi Klum to show off.

At only 10 years old, Willow Smith had but little choice to bring her mother, Jada Pinkett Smith, to the AMAs, as well as her brother, Jaden.

The recently married Katy Perry looks radiant and classy on the AMAs red carpet. It's a shame she couldn't look like this during her AMAs performance, instead resembling a Holiday Barbie.

AMA performer Ne-Yo looks suave (as usual), rocking his fedora (as usual).

Her goth-flavored ensemble wasn't Miley's only change at the AMAs -- instead of her usual upbeat, booty-shaking (i.e. jail-bait) performance, she performed the ballad "Forgiveness and Love."

Diddy's latest project (one of many), Diddy-Dirty Money, took on the AMAs with a performance of "Coming Home."

AMAs presenter Avril Lavigne rocks subtle pink streaks -- punk rock but grown up simultaneously.

Guitar god Carlos Santana and Gavin Rossdale made an unlikely pairing at the 2010 AMAs, performing Santana classics.