Lindsay Lohan is set to host a party in Las Vegas at club LAX for New Year’s after the recovering starlet failed to show up for a birthday celebration in which she was paid for.

A source tells Usmagazine.com the actress, 21, is set to host a New Year’s blowout at Las Vegas hot spot LAX. But Lohan isn’t exactly breaking out the noisemakers about the gig. “Lindsay doesn’t want to host, but she’s contractually obligated,” a source says.

The source tells Us Lohan took on the gig in order to pay back the “hundreds of thousands of dollars” she got by agreeing to host her 21st birthday in Sin City at PURE Nightclub (which, like LAX, is owned by Pure Management Group). Lohan was forced to scrap the July 2 bash to focus on her treatment in rehab. Adds the source, “She already took the money from the birthday gig and can’t afford to pay them back.”