Lindsay Lohan’s lawyer, Mike Heller, tells BestWeekEver the Promises Rehab Center resident will still have her birthday bash at Las Vegas’ Pure Nightclub on July 2, as previously planned.

The party is a contractual obligation with the Caesars Palace Club. According to a celebrity tattle, “Lindsay said she’s doing the party in Vegas, no matter what … Just because you’re sober doesn’t mean you can’t go out and have fun.”

Mike also claims that Svedka Vodka was never signed on to do the party in the first place and that he “would not allow a liquor sponsor.”