The Mean Girls star was partying at Manhattan celebrity nightspot 1Oak last Thursday (13May10) when she allegedly got into an altercation with Stam's boyfriend, New York Rangers ice hockey player Aaron Voros, and tossed her drink on the model.
The incident is said to have infuriated club bosses, who attempted to calm the actress down before leaving shortly after.
A source tells the New York Post, "Lindsay threw a fit because she wanted to be at their table near the DJ. But she claimed she didn't want to sit with Aaron and said, 'He's my ex-boyfriend. I don't want him anywhere near me.'"
Voros has since denied knowing Lohan, who was banned from Los Angeles nightspot Trousdale last month (Apr10) after throwing a glass at ex-girlfriend Samantha Ronson.