The 20-year-old actress was seen leaving Hollywood nightclub Winston's on Wednesday night (02.21.07) wearing one outfit, only to arrive at the Mondrian Hotel at 3.45am in different clothes to continue partying.

A source told gossip website TMZ.com: "Lindsay left Winston's in a grey long-sleeved shirt and white trilby with a spider on it.

"When she entered the Mondrian she was wearing a short-sleeved, skin-tight grey mini dress and a red hat."

On Tuesday (02.20.07) night Lindsay performed a DJ set at Los Angeles club Teddy's, before leaving with "Jackass" star Steve-O.

A source said: "She spent half the night picking CDs and the other half waving her hands in the air every time a song she picked came on."

The "Mean Girls" star checked out of Los Angeles' Wonderland Center on Friday (16.02.07) after a 30-day stay.

Her publicist Leslie Sloane Zelnik said: "Lindsay has finished her stay at Wonderland and will continue the program as an outpatient."

"She is taking it one day at a time, as she is in it for the long haul. She asks that her privacy be respected."

Lindsay checked into Wonderland on January 18 to be treated for alcoholism, following an all-night drinking binge at the Golden Globes (01.15.07).