Mary-Kate Olsen and Sir Ben Kingsley Join Josh Peck and Olivia Thirlby for The Wackness screening By The Cinema Society

by POPSUGAR Celebrity UK 1

With an adorable film gem under their (rather large in Mary-Kate Olsen's case) belts, the cast of The Wackness are promoting like crazy in the US at the moment ahead of their July release date. Last night The Cinema Society screened the movie and, unlike the LA premiere, Sir Ben Kingsley and Mary-Kate showed up to take part in the festivities. Mary-Kate rocked two outfits (a la Sienna Miller at The Edge Of Love London premiere) – one for the red carpet and a more colourful mini dress for the afterparty, Fab UK wants to know which on you prefer! Josh Peck was all in black (which I think is an improvement on yesterday's pale pink jacket) and he shared a hug/tussle with the guy he calls "the Michael Jordan of acting", Sir Ben.

If you haven't checked out the trailer yet I've posted it after the jump, as well as many more photos including Mary-Kate's two outfits and some classic polaroids – so just read more

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