According to E! the couple tied the knot in a “secret wedding ceremony.”
Leighton Meester, 27, and Adam Brody, 34, were engaged last November.
During the weekend, Brody posed with a fan, and was seemingly wearing wedding ring.
The pair starred together in 2011 in romantic comedy “The Oranges.”
Adam Brody has dated Rachel Bilson and director Lorene Scafaria, while Leighton Meester was in relationships with Aaron Himelstein and Sebastian Stan.
Neither rep has confirmed the news.