Charlie and Brooke Mueller Sheen Expecting Twins

Many readers commented that Brooke Mueller Sheen seems to be showing quite a bitalready for being due in April, and there's a reason for that -- she and Charlie Sheenare expecting twins! Brooke's mother Moira Fiore tells PEOPLE,

"Brooke and Charlie are expecting twins, and they are so excited. Obviously, I am floating on air. Brooke looks so beautiful. She is just glowing."

Despite the compliments from mom, Brooke, 31, has had a tough first trimester -- she's been ill throughout. "Brooke has had all day morning sickness but is coming to the end of the first trimester so she hopefully will feel better soon," Moira shares. "It has been rough for her."

The babies -- the couple "think [they] are boys" but aren't sure yet -- will be the fourth and fifth children for Charlie, 42. He is already dad to three daughters -- Cassandra Jade, 23, with ex-girlfriend Paula Profitt, as well as Sam, 4 ½, and Lola Rose, 3, with ex-wife Denise Richards. The couple announced the pregnancyin August.

Source: PEOPLE