The actor/director does not mark the milestone until 30 November (15), but he celebrated early with a special bash thrown by his actress wife Christine Taylor.

The event was held at the Gramercy Park Hotel in New York City on Saturday night (21Nov15), and guests included Ben's comedian father Jerry Stiller and his Zoolander co-star Owen, as well as Robert De Niro and his wife Grace Hightower.

"He (Ben) walked in with a Zoolander face," a guest tells New York Post gossip column Page Six. "He was super happy and pumped - he was very appreciative and thanked her for the party."