That's a surprise! Actress Rosario Dawson has adopted a 12-year-old girl, a source confirms to People.

Although, Dawson’s rep declined to comment, the actress dropped a hint during appearance on the Today show on Wednesday, saying, “I very rarely talk about tabloid speculation and this is not an exception. Mum’s the word.”

On Tuesday, a source told E! News that the single actress was "over the moon" after adopting the pre teen. "She has always wanted this," the source added.

Dawson, who was adopted by her stepfather when she a baby, has always been a strong supporter of adoption and has spoken of her desire to be a mom.

In 2008, she told Latina magazine that she hoped to be surrounded by children.

“It struck me recently that one day I might be sitting around with my children, going, ‘Your grandmother was an amazing woman; I really wish you could’ve known her.'”

“That makes me sad because it would be a waste not to have these people know each other. Whatever time I have, I want it.”

The 35-year-old next appears in Top Five which hits theaters on Dec. 12.