Kate Mara is expecting her second child with her husband, actor Jamie Bell.

The 39-year-old actress shared a photo of her and Bell walking out of Claridge's hotel, noting that there are "three of us" in the photo, suggesting that she is pregnant.

"There are three of us in this pic," Mara captioned the photo posted on Instagram, on Sunday.

The comments section was filled with congratulatory messages.

Photographer Nino Muñoz dropped red hearts and wrote, "congrats" while hairstylist Mara Roszak commented, "Congratulations my beautiful friend. I can’t wait!!!"

Mara and Bell got married in July 2017. The couple welcomed their first child in May 2019 when the "American Horror Story" actress took to Instagram to share a photo of the little one's feet.

"We had a baby a couple weeks ago," she captioned the post at that time. "Here are her feet."

A few weeks after the birth of the first baby with Mara, Bell opened up about his feelings and parenting style in short. "Great! Yeah, I'm in love again," Bell told ET. "Sleep when they sleep."

Bell is also father to Jack Matfin, 8, whom he shares with his ex-wife, actress Evan Rachel Wood. The two were married from 2012 to 2014.

On the work front, Mara worked in series like "Pose," "A Teacher" and "The Big Lie."

She will be next seen in a new series, "Class of '09" where she will portray Ashley Poet's character. The series is under post-production. It revolves around a group of FBI agents who graduated in 2009 and are now reunited after the death of one of their friends.

Bell, on the other hand, was last featured as Harper Curtis in a thriller TV series, titled "Shining Girls," which also stars Elisabeth Moss, Wagner Moura, Phillipa Soo, Madeline Brewer and Amy Brenneman.

Considering his upcoming projects, the actor will be featured in the movies like "Surrounded," "Fred & Ginger" and "The Adventures of Tintin: Red Rackham's Treasure."

Bell is currently filming the movie "Strangers," which is helmed by director Andrew Haigh. The flick will also star Claire Foy, Paul Mescal and Andrew Scott.

Whereas, Wood is working on projects like "Weird: The Al Yankovic Story," "Queen" and "All That I Am."

Kate Mara
Kate Mara will play journalist Nellie Bly in a new drama series. In this photo, the actress attends the premiere of the film “Megan Leavey” in New York on June 5, 2017. Reuters/Lucas Jackson