Photos of Olive Cohen's Birthday Party With Celebrity Guests Including Jennifer Aniston, Ben Stiller, Ellen DeGeneres

Isla Fisher and Sacha Baron Cohen's little Olive celebrated her first birthday on Sunday with all of her A-List friends. Party guests including Jennifer Aniston, the Cox-Arquettes with Coco, Ellen DeGeneres, Portia de Rossi, Ben Stiller, and Keanu Reeves came together in the Fisher-Cohen backyard. Seriously, talk about already having some clout in Hollywood at one. The soiree had a country western theme, which Isla and Sacha got right into with her braids and plaid and his bandana. From Hawaii group vacations, frequent events together and more, this group of heavy hitters always seem to be having a good time and with the comedic talent between them, there are sure to be a lot of laughs.