Olive Cohen, Sacha Baron Cohen and Isla Fisher’s daughter, celebrated her first birthday yesterday. It was a cowboy themed party and both Sacha and little Coco Arquette sported cute little cowboy hats. The real main attraction though was the guest list. It included names such as Jennifer Aniston, Courtney Cox, David Arquette, Ellen DeGeneres, Portia De Rossi, Ben Harper, Jonah Hill and Dustin Hoffman. With all these personalities I’m sure this was definitely a fun party  Little Olive sure can draw a crowd. Happy 1st little lady!

No one said caring for a baby is easy, but it’s nice to see Isla Fisher enjoying hanging out with her baby, Olive (with actor/comedian Sacha Baron Cohen). Check out the baby’s legs – they’re sooo cute and chunky. Chunky babies are the best! But let’s get back to Isla, shall we? Isla was heading to a Santa Monica medical building this weekend when our photogs spotted her with baby Olive. The Australian actress, who is best known for her Wedding Crashers role, will be featured in the upcoming movie, Confessions of a Shopaholic. Based on the novel by Sophie Kinsella with the same name, Confessions will be out in theaters in February 2009. Sounds like fun. I have tons more pics of Isla after the jump, so check them out!