Selena Gomez Wardrobe Malfunction PHOTOS: 'Come & Get It' Songstress Flaunts Pasties, Avoids Nip-Slip in Sexy BBMAs Dress, Justin Bieber Kiss Backstage, Taylor Swift Disapproves

"Come & Get It" songstress Selena Gomez wowed the Billboard Music Awards crowd in a stunning Versace Couture gown in Las Vegas on Sunday evening (May 19). But the 20-year-old beauty's plunging neckline revealed a little TOO much while she was hanging out with gal pal Taylor Swift during the annual music event! Thankfully, Gomez's cleavage was covered-up by strategically-placed pasties, so the "Spring Breakers" starlet managed to avoid the dreaded nip-slip wardrobe malfunction. Instead of flashing the cameras her ta-tas, Gomez was spotted snuggling up and KISSING ex-beau Justin Bieber backstage... and Swift didn't seem too impressed! Read on for more juicy details...

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Well, apparently Gomez isn't that sweet-and-innocent Disney sweetheart anymore... check out her uber-sexy BBMAs getup:

Gomez looks fantastic! But apparently her tight-fitting dress couldn't support everything (including a bra):

Oops! Sort of reminds us of this previous nip-slip scare.

Thank goodness for tape-enhanced pasties!

Gomez apparently enjoyed herself during the show, refueling rumors that Jelena is indeed back on:

Yup, that's Gomez giving the Biebs a quick peck backstage!

And Gomez's (single) girlfriend Taylor Swift wasn't a big fan of the obvious PDA:

That reaction was pure gold... do fans think Swift is actually grossed-out, or just jealous?

Apparently Gomez's perky cleavage snagged the attention of more than a few guys - both potential love interests and former flames!