Isla Fisher and Olive: Trick-or-Treat Mates

Fresh off of her star-studded 1st birthday party a little over a week ago, Olive Cohen enjoyed a night of Halloween fun with her mother Isla Fisher on Friday (October 31).

The "Wedding Crashers" cutie dressed up as a cow while little Olive was kept undercover in what appeared to be a ghost costume, as the duo went trick-or-treating in West Hollywood.

Meanwhile, Isla is lookinf forward to the February 2009 release of her brand new movie "Confessions of a Shopaholic," in which she stars alongside Hugh Dancy.

The film is about "a college grad who lands a job as a financial journalist in New York City to support her shopping addiction and falls for a wealthy entrepreneur."

Celebrity Gossip

Enjoy the pictures of Isla Fisher and Olive out trick-or-treating (October 31).