Thursday night in New York is always the best, young, hottest party night, and last night, at the launch of Charlotte Ronson's new "I Heart Ronson" line for JCPenney, there was nothing amiss. To the right was Charlotte Ronson with her seemingly effortless super-cool swinging young designs. To the left were equally talented/hot/cool family members Samantha Ronson, Mark Ronson, Annabelle Dexter-Jones and mom, Ann Dexter-Jones. And somewhere in the middle of this were Hilary Duff, Sean Lennon, Zoe Kravitz, Mischa Barton and Sophie Bush. In its own way, this party equaled the excitement at the MoMA on Tuesday. Vogue vs. JCPenney -- could it be a tie?