Popsugar Fashion Celebrity Weddings Piper Perabo Wedding Dress Designer Piper Perabo Committed the Ultimate Fashion Taboo at Her Wedding July 28, 2014 by Randy Miller View On One Page Photo 6 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Katy Perry at the 2013 UNICEF Snowflake Ball Katy wore a similar Michael Kors gown, though she took the opportunity to show off her toned arms with a sleeveless version. Previous Next Start Slideshow Celebrity WeddingsMichael KorsWeddings