Mary-Kate Olsen, Ashley Olsen, Elizabeth Olsen
Credit: Sipa Press

The Row designers Mary-Kate and Ashley Olsen brought along younger (but equally stylish!) sister Elizabeth to Barneys New York for the launch of their first-ever line of handbags. A who's who of fashion insiders turned up at the Manhattan retail mecca for an up-close look at the collection of carryalls—which include a style aptly named the Twin Mini. Click through the gallery to see Maria Sharapova, Eva Longoria and more stars at last night's hottest parties!