Rihanna knows how to make a major statement and for the Pepsi Refresh Project Kick Off Party, the artist wore a blue strapless mini dress from Christian Siriano’s Spring 2010 collection. We love the ruffle detail and have to say this frock reminds us of an 80s prom dress. Siriano will show his Fall 2010 collection on February 12th at 3pm and fabulous confections are sure to abound.