Isla Fisher: Sock Monkey Doll for Halloween!

Isla Fisher dresses up as a Sock Monkey Doll as she heads to a Halloween party on Friday (October 26) in Beverly Hills, Calif.

The 36-year-old actress revealed her identity once inside the backseat of her car by taking off her costume headpiece.

PHOTOS: Check out the latest pics of Isla Fisher

Isla was joined by her husband Sacha Baron Cohen who was dressed in a cow bodysuit with a gorilla face mask.

Also inside: Isla dressed causal in a cute plaid shirt while heading to the doctors office in Beverly Hills.