The Billboard Music Awards were happening in Las Vegas, and the stars came out in droves!!!

They also were taking and uploading pictures on Twitter and Instagram like nobody's business!

But we were on them like moths to light, and found the BEST pictures from Sunday night's extravaganza!!!

CLICK HERE to see the gallery "Billboard Music Awards 2013: Twitpics & Instagrams!"

CLICK HERE to see the gallery "Billboard Music Awards 2013: Twitpics & Instagrams!"

CLICK HERE to see the gallery "Billboard Music Awards 2013: Twitpics & Instagrams!"

CLICK HERE to see the gallery "Billboard Music Awards 2013: Twitpics & Instagrams!"

CLICK HERE to see the gallery "Billboard Music Awards 2013: Twitpics & Instagrams!"

CLICK HERE to see the gallery "Billboard Music Awards 2013: Twitpics & Instagrams!"

[Image via Twitter.]

Who knows makeup better than a man?

Uhhh…

Well, Nigel Barker better hope that's true or else he's in for a huge wakeup call. The former America's Next Top Model judge is going from snapping pics to glossing lips as he plans to launch TWO makeup lines next year!

Still worried a man can't handle the beauty gig?

Fear not, his wife AND makeup artist, Cristen Barker, will be working with him on Beauty Equation and BE.

Phew!

Beauty Equation will be

She's pure glam!

Celine Dion might not entertain us with cray cray getups at awards shows, but she sure knows how to look like a dream.

While presenting at the Billboard Music Awards, Celine showed the up-and-comers how to get on the best dressed list in a fitted gold dress.

With just the right amount of cleavage and some leg, Celine walked the line between classy and sexy just right!

Our only disappointment with all this was that she didn't performing!

That dress was meant to put on a show!

[Image via Getty Images.]

Praise that derriere!

Nicki Minaj gave Lil' Wayne a RAUNCHY lap dance during their performance of High School on the Billboard Music Awards in Vegas on Sunday.

DAYUM! She could've given him another seizure!

Ditching her curly blonde wig for a sleek black one, Her Minajesty looked WICKED in a black Frankie Morello spiked jacket, slashed leggings, a Chanel baseball cap, and stripper-worthy high heels.

Quite the 180 from her blue carpet ensem!

Which look do U prefer???

[Image via Getty Images.]

Justin Bieber had quite a night at the Billboard Music Awards in Vegas on Sunday.

The 19-year-old stole hearts while performing Take You looking FLY in a one-sleeve leather jacket, drop-crotch pants, black tank, AND, of course, sunglasses!

But don't forget that single, fingerless glove either!

Oh Biebs! You're so swaggy!

Congrats on your AH-mazing Milestone of a night!

[Image via AP Images.]

FIERCE!!!

No need to worry about blandness when Jennifer Lopez is in the house!

She already rocked the Billboard Music Awards blue carpet, but now she's set the show on FIYAH.

While performing Live It Up, J.Lo stepped out in a ridiculously seksi red leotard and red feathery sleeves by the The Blonds and some killer Chrisitian Louboutin thigh-high boots.

Sure, those sleeves might be reminiscent of Cee Lo Green's colorful Grammys look from a couple years ago, but on JLo, it's soooo much hotter!

Gurlfriend can make any outfit damn fine!

[Image via Getty Images.]

We're all about freedom of expression and creativity among our top artists but…

While there were many stellar ensembles tonight at the Billboard Music Awards, a few celebz might have to rethink their stylists!! LOLz!!! JK JK.

Some outfits are best left ON the rack and that's why these stars have unfortunately landed on our Worst Dressed list.

CLICK HERE to see the gallery, "Billboard Music Awards 2013: Worst Dressed"

CLICK HERE to see the gallery, "Billboard Music Awards 2013: Worst Dressed"

CLICK HERE to see the gallery, "Billboard Music Awards 2013: Worst Dressed"

[Image via AP Images.]