More of Novak's former \"Office\" castmates, including Jenna Fischer, Oscar Nunez and Angela Kinsey, were also photographed at the celebration.
John Mayer appeared in a photo performing, and comedian Nathan Fielder and Bob Saget were also photographed at the star-studded party.
Fisher also shared some snaps from the night out, captioning her post, \"Out to celebrate the milestone birthday of @picturesoftext and hang with some old friends. BJ, you sure do know how to throw a party!\"
Novak also posted about Mindy Kaling's birthday last month. The pair are so close that he is Kaling's daughter Katherine's godfather.
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