Being toasted with an early party, Nicole Scherzinger celebrated her 33rd birthday at Marquee Nightclub and Dayclub in Las Vegas, Nevada on Saturday afternoon (June 25).

The former Pussycat Dolls singer looked stunning in a leopard print beach cover as she was presented a birthday cake by bikini clad ladies during the daytime celebration - with the festivities coming ahead of her actual birthday on June 29th.

Aside from spending time in Sin City, Miss Scherzinger has been busy tending to her duties as a judge on the U.S. version of "The X-Factor".

Of the gig, Nicole recently spoke about how amazed she is about the close working relationship shared by fellow judges Simon Cowell and Paula Abdul.

She said: "I'm not there to get in between them - I get a front row ticket to the 'Paula and Simon Show' every week. I'm fascinated watching them because they've been together for over 10 years."

Scherzinger added that she's thrilled over her new gig, saying, "It's such an honor for me to be part of the panel as an artist in today's music industry."

Enjoy the pictures of Nicole Scherzinger celebrating her birthday at Marquee Nightclub and Dayclub (June 25).