New York, Feb 5 : Keira Knightley, who like numerous other citizens of the UK, is excited over the Duke and Duchess of Cambridge's yet to be born baby, is less than impressed with the monarchy itself.

She said that she is over the moon because of the royal baby, the New York Post reported.

"But I really can't mount an argument in favor of the monarchy. Is that treason? Do I have to turn in my passport?" she added. (ANI)