The royal baby wasn't Monday's only big delivery.
Penelope Cruz gave birth to a baby girl at Madrid's Hospital Ruber Internacional on Monday, Vogue.co.uk reports.
Cruz's daughter, born the same day as Prince William and Kate Middleton's son, is the second child for the actress and her husband Javier Bardem, who also have a two-year-old son, Leo.
The name of Cruz and Bardem's child is not yet known.
Both Cruz and Bardem are starring in Ridley Scott's upcoming film The Counselor.
The Hollywood Reporter has reached out to Cruz's rep for comment.