Olivia Palermo first caught our attention when she ... A darker look for Olivia in 2007 as she opted for a black and metallic mini dress for a Calvin Klein party in New York.

He Has His Own Style Olivia Palermo on Her Wedding Look: 'You're Not Going to See Me in a Huge Cupcake Dress' Olivia Palermo's Engagement Ring: Get a Good Look at Her Yellow Diamond Sparkler!

The model, 31, was joined by Leighton Meester and Olivia Palermo as the event kicked off ... looked as chic as ever in a chartreuse midi dress that featured pleats and ruffled details down ...