Is baby number two already on the way for Ashton and Mila?

Ashton Kutcher and Mila Kunis must really be enjoying life as parents, as it has been reported that the pair are already planning another baby.

Mila gave birth to their first child, Wyatt Isabelle, back in October 2014 and it seems that the couple want to have a sibling close to her age.

A source close to the family told Life & Style magazine that Ashton and Mila "both agreed they want back-to-back babies and would love to be able to announce a pregnancy by the end of this summer.”

"Their daughter has brought so much joy to their lives that having another child is their main priority," the insider continued.

The source told the magazine that Ashton is even "secretly hoping" for twins, given the fact that he himself has a twin brother, Michael. The pair have been keeping a low-profile since the birth of their daughter last October, but they were seen out and about with Wyatt on Saturday in LA. 

Ashton and Mila looked chilled as they tended to Wyatt while meeting friends for lunch at Black Market. Proud dad Ashton was dressed as casually as ever in a grey sweatshirt and shorts as he held Wyatt.

Looks like this having-a-baby business suits him down to the ground…