Eugene Remm and Mark Birnbaum

Eugene Remm and Mark Birnbaum (WireImage)

Steven Tyler and Axl Rose were among guests celebrating EMM Group partners Eugene Remm and Mark Birnbaum’s joint birthday on Monday. The bash appropriately had a “Rockstar” theme. The dinner at Catch also drew Rachel Roy, Tyson Beckford and David Blaine, who amazed guests with magic tricks. The party raged on at Catch Rooftop. When a DJ played “Walk This Way” and “Sweet Child O’ Mine,” guests Tyler, Rose, Michael Kenneth Williams, Kris Humphries and DJ Cassidy chanted along.