Immersing themselves in the City of Lights' semi-annual style showcase, Mary Kate and Ashley Olsen were side-by-side in Paris, France on Thursday night (September 29).

The former "Full House" stars are in town for Paris Fashion Week Spring/Summer 2012 Ready To Wear, with the two ladies both dressed in black attire while holding an exclusive party for their clothing line The Row.

Continuing to expand their ever-so-profitable business empire, Mary Kate and Ashley most recently signed on as the creative directors of Italian sneaker brand Superga.

Talking about the venture, Ashley told WWD, "At first, Superga just needs to start off in the right stores and be on the right people’s feet. We look at a million opportunities a day; it’s very personal for us."

Enjoy the pictures of the Olsen twins out in Paris (September 29).

Photo Credit: PacificCoastNewsOnline.com