VIP arrivals due to join the royal baby in 2013

Kristen Bell and Dax Shephard

House of Lies actress Kristen Bell will also be joining the celebrity parents club next year. She's expecting her first baby with her fiancé of three years, Dax Shepard.

Friends of the couple say they are "excited and ecstatic" while Kristen herself recently posted on Twitter that she is "getting fatter by the day".