According to The Sun, LiLo signed autographs at the Q102 radio event - held at the Wells Fargo Arena - as she wore a khaki coat and grey woolly hat.
She was later seen entering the catering room at the venue, alongside the Glad You Came hitmakers.
The sighting is the first time Lohan has been seen in public since she allegedly struck fortune teller Tiffany Mitchell at the Big Apple's Avenue nightclub last Thursday (29th November).
George has since denied that the incident had anything to do with him, with the singer insisting that Lindsay is "a good girl."
Max and bandmate Jay McGuiness have since expressed their support for the Liz & Dick actress since her arrest, with Jay even recently performing in a 'Free Lindsay' t-shirt.
He explained to MTV News: "It's a bit of a blur actually. We actually carried on partying after that. It was reported that the fight was about Max, but I don't think it actually was."
"After a small scuffle that went down, I felt very sorry for her. I wanted to cheer her up and I think she said she liked it, right?"
Watch MTV News on the hour every hour on MTV - Sky Channel 126 and Virgin Channel 134