Snookivegas011112gallery460bright.jpgDavid Becker/WireImage

Oh, Snooki ... we miss your signature poof!

The 4'10" Jersey Shore star, sporting a straight and maroon-streaked 'do, hit up the Gallery Nightclub inside Planet Hollywood Resort & Casino to party Las Vegas-style.

Spies inside the club say the newly slimmed-down reality starlet and her beau Jionni LaVelle were sipping on Grey Goose with OJ all night long in the VIP area.

Aside from partying, Snooki is also in Sin City for the annual Consumer Electronics Show to announce her partnership with iHip headphones.

Mo' money, mo' problems ... but in her case, it's mo' money, mo' makeup. We'll fist pump to that!