Grace Kelly's granddaughter has welcomed a son.

Charlotte Casiraghi, the daughter of Princess Caroline of Monaco, gave birth to Raphael on Tuesday (17Dec13).

The little boy is the 27 year old's first child with her partner, French actor Gad Elmaleh.

Raphael is Princess Caroline's second grandchild - her son, Andrea Casiraghi, also welcomed a boy, called Sacha, in March (13).