Nicole Richie attended the CLASSY by Derek Blasberg book launch dinner on May 6, in Beverly Hills.The designer looked like a bohemian queen in a Missoni maxi kaftan complimented well with a House of Harlow 1960 gold bead crystal 5-strand headpiece.She carried her vintage Gucci clutch.Nicole's outfit was complete with a pair of Christian Louboutin "No prive" snakeskin slingbacks.This is another