The Windsor Arms Hotel was replete with celebrity guests as the 2013 Toronto International Film Festival and Hollywood Foreign Press Association teamed with InStyle for a swanky shindig in Toronto, Canada last night (September 9).

“Zero Dark Thirty” actress Jessica Chastain worked her shutterbug mojo in a baby blue and black dress while “Matrix” master Keanu Reeves kept it simple in black attire.

And “Little Miss Sunshine” stunner Abigail Breslin looked quite mature in a cleavage-baring floral print dress teamed with a denim jacket.

Miss Breslin is in Toronto promoting her new film “August: Osage County.” Per the synopsis, “The film is a look at the lives of the strong-willed women of the Weston family, whose paths have diverged until a family crisis brings them back to the Oklahoma house they grew up in, and to the dysfunctional woman who raised them.”