Aaron Johnson is to become a father for the second time.

The 'Kick-Ass' actor and 44-year-old fiancee Sam-Taylor Wood - who have 12-month-daughter Wylda Rae - are now expecting another child, representatives for the couple have confirmed to People.

Aaron and Sam, who have a 23 year age gap, began their relationship when they met on the set of John Lennon biopic 'Nowhere Boy' in 2009.

Despite being notoriously private, 21-year-old Aaron has previously defended the differences between them saying they were an ideal couple.

He said: "I'm in love, I'm blissfully content. No one's getting hurt. We're in a loving relationship. We're engaged. Everyone who matters is happy. Exactly which bit of that do I have to defend or apologise for?"

Sam already has two daughters from a previously relationship with Jay Jopling, who has once romantically linked to singer-turned-clothes designer Lily Allen.

Aaron, is currently shooting a leading part in Oliver Stone's drug drama 'Savages'.