Penelope was last seen on Saturday attending a concert in Madrid despite being heavily pregnant Photo by Daily Mail
Penelope Cruz has given birth to her second child - on the same day as the Royal baby.
The sex of the baby was not officially disclosed, but media reports say it is a girl.
Cruz gave birth to the couple's first child, son Leonardo Encinas Bardem, in Jan. 2011, six months after she and Bardem tied the knot.
The brunette beauty opened up to Vogue last year about how motherhood has truly changed her.
"From the first second, you feel so much love," she gushed in the magazine's June 2011 issue.
"It is a revolutionary experience. That's the best way I can describe it. It transforms you completely, in a second. Nature is very wise and gives you nine months to prepare, but in that moment, when you see that face, you are transformed forever."