Lindsay Lohan parties at Pure in Las Vegas

Lindsay Lohan returned to the site of her scrapped 21st birthday party on Saturday in a bid to prove she can party without the booze. The star took a break from rehab to enjoy a night out at Pure nightclub in Las Vegas, according to Star Pulse.

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 1 a.m. to 4 a.m.