by Breaking Celebrity News Staff

X-Factor cutie Nicole Scherzinger hit up Sin City at the weekend to celebrate her upcoming 33rd birthday and in true [expletive] Cat Dolls style she did it with pazazz.

The beautiful brunette kicked off the festivities on a low key note, relaxing in the sun at Marquee Dayclub on Friday. But the pop star upped the ante later in the day hitting up LAVO to enjoy some signature dishes before heading upstairs to the nightclub where she was surprised with birthday cupcakes.