It's an Office reunion [1]! Stars John Krasinski [2], Jenna Fischer, Angela Kinsey, and Oscar Nunez met up in LA on Saturday to attend their costar Brian Baumgartner's wedding to girlfriend Celeste Ackelson [3]. John arrived with his wife, Emily Blunt [4], and the pair shared a sweet laugh as they made their way into the party. Meanwhile, pregnant Jenna chatted with Angela, while Brian greeted guests, which included Gossip Girl [5] alum Jessica Szohr [6]. This is Brian's second marriage as he was previously wed to actress Julia Fisher. Congratulations to the happy couple!