Charlie Sheen and wife Brooke Mueller Sheen speak to Entertainment Tonite in a new interview airing tonight.

The Sheens open up to ET about the birth of their twin sons, Bob and Max, born 7 weeks premature.

“It was scary,” Brooke says. “I went to the NICU to see them and words can’t express how amazing and shocking to see two human beings that came out of me. But I was scared. Our babies had so many tubes on them, it was frightening. I didn’t have the easiest pregnancy. I had preeclampsia, gestational diabetes and cholestasis.” Charlie adds, “She would have been in serious jeopardy had they stayed in longer.”

Charlie also sets the record straight on the reported heart problem Max suffers from,

“They were 7 weeks early so things were still developing. Max has something called ejection fracture. It’s the volume at which the heart pumps and how much blood the heart can pump. There wasn’t anything that any other premature child, especially a twin, doesn’t normally go through. Things are gradually going toward normal.” Charlie goes on to explain the condition that kept baby Max in the NICU longer than brother Bob, “The reason he had to stay longer in the hospital than Bob was a weight issue.”

Today the Sheens say the twins are “doing great.”

“They are completely Sheens,” Brooke jokes. “They don’t have any Mueller genes. I’m like, ‘Can I at least have an ear?!’ Bob looks identical to Charlie. Everybody at the NICU called him Charlie. And Max looks like (Charlie’s dad) Martin.”

Charlie says that his two daughters, Sam and Lola, love to hold their baby brothers.

“I think they think they might be dolls,” Brooke says. Charlie jokes that he has a different issue when his older daughter, Cassandra, 24, visits. “With her it’s more like, ‘Don’t get any ideas!’ At 43, I’m not ready for that label (of Grandpa).”

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Congratulations to Brooke Mueller and Charlie Sheen on the safe arrival of their twin boys.

The babies, named Max and Bob, are the first for the couple, who married in May 2008.

“They’re doing great,” Charlie’s publicist Stan Rosenfield tells People of the babies, who weren’t due for another few weeks. “And Brooke’s doing great.”

The family is “very happy,” Rosenfield says, adding that Charlie is “ecstatic. He’s a family man – now he has three daughters and two sons. He’s a wonderful father.”

Charlie is a pro at fatherhood. He has 3 daughters, Sam, 4, and Lola, 3, with ex-wife Denise Richards, and another, 24-year-old Cassandra, from a previous marriage.

Photo by Frederick M. Brown/Getty Images

Charlie Sheen and Brooke Mueller take Charlie’s two daughters Sam and Lola out to Brentwood Country Mart yesterday.

The couple expects twin boys early this spring.

The babies are due in April, but will probably arrive in March.

Everyone in Hollywood is having twins and now Brooke Mueller and Charlie Sheen are joining the multiples party.

“Brooke and Charlie are expecting twins, and they are so excited,” Moira Fiore, Brooke’s mom, tells People. “Obviously, I am floating on air.”

The grandma-to-be says that the couple “thinks the twins are boys” but aren’t sure.

“Brooke has had all day morning sickness but is coming to the end of the first trimester so she hopefully will feel better soon,” says Fiore of her 31-year-old daughter. “It has been rough for her.”

Still, “Brooke looks so beautiful,” adds her mom. “She is just glowing.”

Charlie, 42, who is already a father to three girls, has expressed interest in having a son. In August, Brooke was quoted saying that, she thought they would have a boy.

“Odds are it’s a boy, but we’ll be happy with either sex.”

The twins are due in April.

PHOTOCREDIT:PICAPP

Alison Sweeney and son Benjamin, 2

Antonio Sabato Jr with Daughter Mina, 5 (on wednesday)

Grier Henchy, 1 meets Sam Sheen, 3

Lola Sheen, 1, Brooke Mueller (Charlie’s fiance), Charlie Sheen and Sam Sheen, 3

PHOTOCREDIT:Sardella/WIREIMAGE