Charlie Sheen to become grandfather

Cassandra is Sheen's daughter from his high school girlfriend Paula Profit, reported Us Magazine.

The 47-year-old actor's ex-wife Denise Richards posted the news on twitter.

"I guess some of you have heard ... Charlie Sheen is going to be a Grand pa.. Yes GRAMPA! his beautiful daughter Cassandra is gonna be a mama," Richards posted on Twitter.

Sheen, who is currently living with 24-year old porn star Georgia Jones, has five children with three different women.

Fans took to the social networking site to congratulate Sheen on the big news.