Grey's Anatomy and Scandal creator Shonda Rhimes has welcomed a third baby.

The hugely successful writer shared the happy news on Twitter. "Been AWOL from Twitter," she tweeted. "I totally have a good reason: TINY HUMAN #3 is here and she's perfect."

The 43-year-old also wrote: "Babies are good. Life is good. #2shows3kids."

Rhimes is already the mother to two older daughters as she adopted Harper in 2002 and then Emerson a decade later.

The screenwriter, director and producer leads a very private life and has not released any additional details about her new arrival.

Scandal continues on Thursdays on More4 while Grey's Anatomy will return to RTÉ Two in the new year.