Kourtney and Khloé sizzled in little black dresses at the Maxim Hot 100 party in Los Angeles. Khloe went trendy arriving in a one shoulder Kova & T "Alaina" dress teamed with ankle-buckle high heel sandals by Camilla Skovgaard. Taking a more demure -- yet still sophisticated -- fashion approach, Kourtney opted for a long sleeve black minidress, peep-toe booties, and a pulled back updo!