Old habits die hard.

Lindsay Lohan is a totally supportive groupie to boo Avi Snow's band, City of the Sun. She's also totally predisposed to taking things that don't belong to her.

E! Online reports that Lilo was on hand to cheer on Snow and Co. before jetting off to Brazil, posting this backstage photo on Twitter.

Snow told E!, "She's really awesome, and she's a lot of fun," Snow tells E! News exclusively in his first words since the duo were linked as a couple. "I would definitely call her one of our biggest supporters."

Or one of their only supporters, because who heard of them before this?

In any case, we're happy she's happy, but everyone would probably be happier if she could quit with the sticky fingers.

Sources told E! News that La Lohan walked away from the 'Anger Management' set with bracelets that probably don't belong to her, though it's unclear if they were on loan or a gift ... or just there for the taking.

Be careful, Lilo. You've worn cuffed silver bracelets enough already.