Sheen to Be A Grandfather: 'It's Fabulous'

Charlie Sheen has announced that he will become a grandfather at age 47 this year.

The "Anger Management" star appeared on David Letterman's "Late Show" Monday night with the happy news that his eldest daughter Cassandra Estevez is expecting.

Estevez is Sheen's 28-year-old daughter with his high school girlfriend Paula Profit.

"You are going to be, in the next several months… fill in the blanks," said Letterman, teasing Sheen. "You are going to be a…"

Sheen responded, "Grandfather."

While the former "Two and a Half Men" star noted that becoming a grandparent is "fabulous," the actor added that "grandpa" is "not a title I'm ready to adopt."

Furthermore, Sheen told Letterman that he would be a "good grandfather" for one main reason.

"Because you can leave the kid," Sheen explained jokingly.

Sheen's ex-wife, Denise Richards, initially announced the baby news via Twitter.

"I guess some of you have heard… @charliesheen is going to be a Grandpa… yes GRAMPA," wrote the actress. "His beautiful daughter Cassandra is gonna be a mama.."

The mother-to-be and her husband Casey Huffman is expecting their first child sometime later this year.

Sheen was there to give his eldest daughter away during her 2010 nuptials in Santa Barbara, Calif., according to E! News.

The actor, who has been married three times, shares two daughters with Richards; Sam, 8, and Lola, 7. Sheen also has twin boys, Bob and Max, 2, with ex-wife Brooke Mueller.

In the past, the actor has made headlines for alcohol and drug abuse, marital problems, and allegations of domestic violence over the course of his acting career.

Although the actor was fired from CBS's "Two and a Half Men" in 2011 and displayed erratic behavior thought to be linked to substances, Sheen appears to have recovered from drug and alcohol use.

Meanwhile, Sheen continues to work on his television series "Anger Management," and has several movie projects including "Scary Movie 5" and "Machete Kills" coming up.