(Agencies)
Updated: 2008-04-22 10:41

Lindsay Lohan

Fears for the health of troubled star Lindsay Lohan are mounting after she was spotted enjoying several rounds of cocktails during a night out this weekend.

The actress recently pledged to stay sober after a stay in rehab last year, following two DUI incidents that resulted in a brief stint in jail.

But Lohan's sobriety has been called into question after frequenting several New York nightclubs with her DJ friend Samantha Ronson.

The 21-year-old arrived at Times Square's Hawaiian Tropic Zone on Saturday with Ronson, who spun tunes for the club from midnight until 4 a.m.

Lohan, meanwhile, sat at a table behind her pal's booth in the second floor V.I.P. section, where she was seen smoking cigarettes, chatting to friends and reportedly sipping Grey Goose vodka-and-Red Bull cocktails.

Lohan finally emerged from the building at 4:15 a.m. after Ronson's show finished. Last weekend, Lohan accompanied the DJ to gigs at three different Los Angeles venues.

Lohan previously suffered relapses while in Italy on New Year's Eve and again in New York in January.

After her New Year’s drinking session, her lawyer Blair Berk said: "After being handed a champagne bottle while on a dance floor in Italy on New Year's Eve and drinking from it, the good news is that Lindsay stopped herself, called her sponsor, and got herself back on track.

"There is no magic cure here. The most unfortunate part of this is that Lindsay has to share her 'one day at a time' with the entire world."