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The ladies of pop music brought sexy back... literally at Elton John's 2013 AIDS Foundation Oscar viewing party, held at the Pacific Design Center on Sunday, Feb. 24.

Miley Cyrus, Britney Spears and Skylar Grey showed off their beautiful backs in white and black dresses, respectively. Nicki Minaj showed some serious cleavage in the front, spilling out of the top of her wintry white mini at the event.

Cyrus wore a long-sleeved Azzaro gown in winter white. It dipped low in the back, which was very sexy. Her spiky coif is somewhat two-toned at this point, but she was a mix of tough and femme. We sorta dig the faux hawk.

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Check out the back. Is there such a thing as back cleavage? Because if there is, Miss Miley had it. Whoa. What a sculpted back.

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Brit Squared showed off some sideboob in her black, cap-sleeved Michael Cinco couture gown. She looked like a sparkly diva, and we love her new chocolatey, silky locks. She was a bit sunkissed, too. We like this post-Jason Trawick look on her.

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Brit's dress also bared her back, but it had a sheer panel over it. We wish it didn't. It'd have been sexier!

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Skylar Grey wore a basic black Giorgio Armani gown with a bibbed bodice, keeping in line with her former gothy image, which she's ditched. There was no "grey" area here. It was simple and pretty from the front...

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...but check out the back. First off, she has a major tattoo. That thing is intense! But the open back gave this dress a sexy edge. We like Grey better as a moody goth chick, as opposed to a frothy pop tart.

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The Queen of the Barbz was spilling out of her mini. Hi, Nicki's boobies! It was a pretty party frock, but we couldn't keep our eyes off her chest or her frosty, matte lips. Her roots were also a stark contrast to the platinum locks.

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Chris Brown was also in attendance, wearing nerdy specks and a black and grey, leopard print patterned jacket by Angelo Galasso. Is he squinting from the flashbulbs or because of the reflection of his really loud blazer?

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JC Chasez was also in the house with his lovely lady.

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Emeli Sande, the toast of the British music scene, after Adele, of course, also looked adorable in her black and white party dress.

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