Lindsay Lohan Parties at Pure  7/16/07

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Troubled actress Lindsay Lohan returned to the site of her scrapped 21st birthday party on Saturday (14Jul07) in a bid to prove she can party without the booze.

The Mean Girls star took a break from rehab to enjoy a night out at Pure nightclub in Las Vegas.

The actress had planned to stage her recent birthday celebrations at the starry venue but opted instead to host a small party for family and friends at Courteney Cox's Malibu, California beach house.

She made amends with Pure bosses on Saturday when she made an unannounced appearance and danced the night away, sipping only energy drink Red Bull.

Members of the Pussycat Dolls and illusionist Criss Angel joined Lohan in the club's VIP DJ booth, where they partied from 1am to 4am.

Lohan recently extended her stay at rehab facility Promises in Malibu, California, where she is seeking counseling after a series of drug and alcohol-related misdemeanors.

The actress checked into rehab after she was charged with driving under the influence following a May (07) car crash in Beverly Hills.