Alexa Chung had another evening out on the town last night, heading to Charlotte Ronson's party in New York to celebrate her clothing line with US store JC Penney. Charlotte's siblings showed up to do DJ sets and support their sister, with Mark and Samantha both hitting the decks and hanging out with friends like Mischa Barton at the party. Other famous guests included Sophia Bush, Olivia Thirlby, Hilary Duff, Zoe Kravitz, Sean Lennon and Mischa's The Beautiful Life costar Ashley Madekwe. What a star studded bash!
To see more fun photos of all the guests at last night's party, just read more.