Mary-Kate Olsen and Ashley Olsen Halloween Costumes Pictures

by Lindsay Miller 1

Mary-Kate and Ashley Olsen show off their sense of humor — and fashion — in a newly released, Halloween-themed video for StyleMint. The sisters created a fun video quiz for shoppers that features the pair all dressed up in a range of costumes. Mary-Kate and Ashley first appear as Stan and Cartman from South Park. They also try on sexy, leather-clad cat costumes and don Darth Vader and Stormtrooper helmets. The latter getups were complete with lightsabers fashioned from the Olsens' must-have accessory, a to-go coffee cup. The quiz reveals a special discount code for the sisters' t-shirt site and gives them a chance to cut loose and show a sillier side of themselves. The Olsens launched the video last night as they headed back to the States following a stint at Paris Fashion Week. Mary-Kate and Ashley attended Kanye West's show during their stay in the City of Lights and also got down to business, presenting their handbag collection for The Row at Montaigne Market.

To see more photos of Mary-Kate and Ashlen in their costumes, keep reading.