Lindsay Lohan has vowed to stay sober at Coachella.

The 'Mean Girls' star - who recently confessed to having ''one glass of wine'' since leaving rehab for the sixth time - jetted to Indio, California for the first weekend of the music festival on Friday (11.04.14), despite being urged by friends to avoid the event.

A source told gossip website that the 27-year-old star is aware that going to the festival is a risk to her sobriety, but has promised her friends that she won't fall off the wagon again.

Lindsay was spotted at the festival last year with her brother Cody, 16, just days before checking into her court-ordered treatment program.

A source previously revealed that the troubled starlet is attending the three-day bash with her mother, Dina Lohan, but those close to her are not confident the showbiz matriarch will be able to prevent her daughter from resisting ''temptation.''

The insider said: ''Lindsay should not be going to Coachella.

''And having Dina with her isn't really making anyone feel comfortable that she will be a good chaperone. It's a big alcohol and drug festival and it is the last place that Lindsay should be.

''Lindsay swears that she'll stay sober, but Coachella is a huge party and there are going to be so many temptations for her. Everyone is really worried about her.''