Benedict Cumberbatch and Fiancee Sophie Hunter Expecting First Baby

— -- Just weeks after "Sherlock" star Benedict Cumberbatch announced his engagement to Sophie Hunter in a newspaper, the actor is now revealing he's going to be a father.

Cumberbatch, 38, and Hunter, 36, are "both over the moon" about the new addition, the actor's rep told US Weekly.

This amazing news comes just two months after Cumberbatch quietly announce his engagement by placing an eight-line notice in the births, deaths and marriages column of The Times of London newspaper.

The "August: Osage County" and "12 Years a Slave" star has been with his love since 2009, when they appeared together in the film "Burlesque Fairytales."

On the humble engagement, Cumberbatch joked to "Good Morning America" that the details of his proposal where "for me to know and no one else to find out."

He also laughed at fans obsession for him and Hunter to have "Cumberbabies."

"There are people out there that seem to create collective nouns for anything to do with the first part of my name," he said.

Cumberbatch added to US that he plans to have a private wedding.