HAPPY 39th BDAY JENNIFER!

Jennifer Aniston celebrated her 39th birthday on the Vancouver set of her upcoming film, Traveling.

The cast and crew surprised the Birthday Girl with a cake and large flower arrangements.

Two days earlier, she and 20 of her closest friends rented out the private room of Cioppino's Mediterranean Grill for a lively dinner party.

The oldies partied til 2:30am!