The troubled actress - who is currently serving a court-ordered 90-day stint in rehab - became friends with the 'Walks Like Rihanna' singers after meeting on the party circuit last year, and band member Max George has revealed they took her for a drink to cheer her up before a recent court appearance in Los Angeles.
Lindsay was in and out of court earlier this year on suspicion of DUI and was later ordered to rehab.
Max told new! magazine: "She did pop over to the house to see us all one day, but it was really brief. She was in town and just wanted a bit of support before her court case.
"We bumped into her ex-boyfriend when we were in the pub and he told us she needed a bit of support. So we invited her over for a bit for a drink, which probably wasn't the best idea. We put our vodka in water
Band mate Siva Kaneswaran then joked: "Get her off her head before she saw her lawyers!"
Lindsay, 26, is currently seeking treatment at the Cliffside rehab centre in Malibu, California, after checking out of the Betty Ford Clinic earlier this month.