Charlie Sheen is to be a father again.

The 'Two and a Half Men' star ? who has three daughters from previous relationships ? has announced new wife Brooke Mueller is expecting their first baby together.

Sheen, who married Mueller in May, said: "Brooke informed me a few days ago that very soon we'd be producing our own version of 'Two and a Half Men'.

"That would imply it's a boy, so until we know, we'll refer to it as 'Two and a Half People'. We're beyond happy to be new parents together."

Mueller added: "We couldn't be more excited to add to our already big and happy family!"

The 42-year-old actor also praised Mueller (31) for her mothering skills, adding: "She's the best stepmom Sam, Lola and Cassandra could ever hope for.

"Seeing her love and affection with those three, I know she'll be an amazing mom. Unless I bat 100 percent, perhaps a boy awaits us."

Sam, four, and three-year-old Lola are Charlie's children with ex-wife Denise Richards.

Cassandra, in her twenties, is his daughter from a relationship with Paula Profitt.