Nicole Scherzinger celebrates birthday in Vegas, pulls standard back pose

X Factor judge Nicole Scherzinger jetted into Las Vegas to celebrate her birthday party in style last night.

Nicole Scherzinger, Las VegasNicole Scherzinger partied in Las Vegas for her birthday. Copyright [Wenn]

Former Pussycat Doll Nicole Scherzinger may have been in England for her first round of X Factor auditions last week.

But she made sure she was back on US soil as she celebrated her 33rd birthday in party central, Vegas.

The sexy brunette celebrated her big day with a pool party at celeb fave Tao Beach - where she gave a surprise performance.

Tao Beach tweeted: "Surprise birthday performance @TaoBeach by the birthday girl @NicoleScherzy! Giving us a gift on her bday!"

She hit the beach wearing a leopard print bikini with matching leopard print sheer dress, gold heels and a Grecian gold headband.

Nicole Scherzinger, Tao BeachNicole Scherzinger hit Tao Beach for a party during the day. Copyright [Twitter]

Nicole Scherzinger, Tao Beach, birthdayNicole Scherzinger surprised fans at the beach by performing. Copyright [Twitter]

And Nicole ended the day partying at Tao nightclub, where she joined DJ Vice on the decks.

Lewis Hamilton's girlfriend changed into a gold mini dress for the evening celebrations which dipped down at the back.

Nicole ScherzingerNicole Scherzinger changed into a gold low-backed dress. Copyright [Wenn]

And Nicole made sure she pulled her standard 'my back is sexy' pose as she was papped by waiting photographers.

She tweeted: "Having a blast @taobeach and can't wait to celebrate with all of you guys tonight @taolasvegas with @djvice!"

And she posted a picture of a Herbal Essences birthday cake that she was given at the beach, tweeting: "Love my @herbalessences birthday cake!! Can't wait to share with everyone at @taobeach"

Nicole Scherzinger, birthdayNicole Scherzinger poses with her birthday cake (and some hunky men). Copyright [Twitter]