Joined by host Mathew Hoffman, the Hills hottie looked fabulous as she hammed it up in an all-black ensemble at the Pacific Palisades private residence.
With the season premiere of The Hills taking place tonight on MTV, Stephanie has been a busy girl as of late, as she was spotted last Thursday at the Ecco Ultra Lounge for the Maxim October Issue soiree.
Pratt was supporting her Hills pal Audrina Patridge, who appears on the magazine’s cover sporting a bikini. That ought to sell a few copies!
Credit: Celebrity Gossip