Rod Stewart poses with his sons Alastair, 19, and Aiden, 14, as well wife Penny Lancaster as his family attends the 'Mission: ...

One image showed the former model taking a selfie while cradling ... his baby sister. In their joint caption, Liam and Nicole ...

The couple, who already share son Louie, welcomed a baby girl, making them a family of four Rod Stewart ... "Elsie Skylar ...

But having discussed it with the little ones they said they ... following the news that Rod's daughter Kimberly Stewart is expecting another baby.

Rod Stewart thrilled fans during the week when the rock and roll singer took to Instagram to share an incredibly exciting announcement.