The couple only announced their pregnancy back in May.

Sophie Turner and Joe Jonas have welcomed a new baby into their family. A representative for Turner confirmed the news to The Hollywood Reporter on Thursday night.

Their second child, a baby girl, will join their sister Willa in the family, who was born in July 2020.

Both mother and baby are believed to be doing well. A representative for the couple confirmed the news with People Magazine: "Joe and Sophie are happy to announce the arrival of their baby girl."

NEW YORK, NEW YORK - MAY 02: (L-R) Joe Jonas and Sophie Turner attend The 2022 Met Gala Celebrating "In America: An Anthology of Fashion" at The Metropolitan Museum of Art on May 02, 2022 in New York City. (Photo by Dimitrios Kambouris/Getty Images for The Met Museum/Vogue)

Turner spoke with Elle UK back in May about her first daughter becoming a big sister, telling a very cute anecdote. She said: "I'll point to my stomach and say, 'What’s in there?' And she’ll go, 'baby.' But then she points to her own stomach and says, 'baby,' and then she’ll point to her dad’s tummy and say, 'baby.'

"So, I think she just thinks that a belly is a baby and that’s the name for it. But she is a lot clingier than normal, so I think she has an idea."

Before they welcomed baby Willa, Sophie Turner and Joe Jonas married in May 2019 during a secret ceremony in Las Vegas after the Billboard Music Awards.

Turner is well-known for playing Sansa Stark in the 'Game of Thrones' fantasy series, but most recently she appeared in HBO's 'The Staircase' adaptation with Colin Firth and Toni Collette. Jonas is best-known for being one third of The Jonas Brothers, a pop/rock band with his brothers Kevin and Nick. He's also part of DNCE and dabbles in TV and film appearances.