Lindsay Lohan is still hot on the trail of Max George -- following him ... like a common groupie ... from NYC to Philadelphia last night, and even popped up backstage at a 'Wanted' gig.
Lindsay somehow scored a VIP pass to the Jingle Ball -- where The Wanted performed -- and was seen signing autographs for fans.
Of course, the last time LiLo tried cozying up to Max ... she got sloppy drunk, rejected by the boy-bander, and ended up in handcuffs after fighting with a woman inside of an NYC nightclub.
No word if Lindsay actually got to spend time with her man-crush this time around.
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