Charlie Sheen and Brooke Mueller are expecting a baby! In a statement from his rep, Charlie tells "Extra," "Brooke and I are thrilled! 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%, perhaps a boy awaits us."

Charlie has two girls with ex-wife Denise Richards -- Sam, 4, and Lola, 3 -- and a 23-year-old daughter with ex-girlfriend Paula Profitt.

The happy couple tied the knot in May -- and have been talking about kids ever since. "Hopefully, triplets!" Brooke told "Extra" about her baby plans. "Could you imagine if I really had triplets? He'd be like, 'Whoa!'"