Kelly Osbourne attended Adam Lambert's annual Halloween party at Bootsy Bellows in Hollywood last weekend dressed as Margot Tenenbaum from the film The Royal Tenenbaums. She rounded out her costume with a vintage-looking Hermès Kelly Bag. It should probably be noted that an Hermès bag is not an absolutely essential ingredient of the Margot Tenenbaum costume, but everything else Kelly is wearing is spot-on.
As you might suspect, Kelly has a handbag collection that's truly befitting of a full-time rock progeny/part-time E! Channel fashion commentator. She and her mother share an extreme affinity for Chanel. You can browse through most of her high-end stash in "The Many Bags of Kelly Osbourne", and you can check out her mum's collection in "The Many Bags of Sharon Osbourne."