Kate MaraandJamie Bellare expanding their family, a rep for the actress confirms to PEOPLE.

Mara, 39, revealed that the couple is expecting another child in anInstagram poston Sunday.

“There are three of us in this pic 🫶🏻,” Mara wrote alongside a photograph of herself and Bell, 36, holding hands with one another.

In the snapshot, theA Teacher star dons a short pink dress with silver embellishments on top. Bell, meanwhile, looks classically cool in a black suit.

“🤗🤗🤗 Congratulations!” wroteAndrew RannellsasMJ Rodriguezadded, “Omg congratulations cutie.”

Ricky Vigil M/GC

LONDON, ENGLAND - JUNE 28: Kate Mara and Jamie Bell seen attending the BFI Chair’s Dinner awarding BFI Fellowships to James Bond producers Barbara Broccoli and Michael G. Wilson at Claridge’s on June 28, 2022 in London, England. (Photo by Ricky Vigil M/GC Images)

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Mara and Bell are already parents to their daughter, whose name they have kept private. TheRocketmanactor also sharesa sonwith ex-wifeEvan Rachel Wood.

Around the time of their daughter’s arrival in May 2019, Mara shared a photo of her infant’s feet.

NASH / BACKGRID

<em>EXCLUSIVE</em> London, UNITED KINGDOM - &lsquo;Billy Elliot&rsquo; actor Jamie Bell and pregnant partner American actress Kate Mara are pictured checking out a gated property in Primrose Hill after putting their LA home up for sale for £2.6 million! The Happy couple looked relaxed as they checked out the affluent area of North London. <strong>SHOT ON 07/04/2022</strong> Pictured: Jamie Bell and Kate Mara BACKGRID USA 9 JULY 2022 BYLINE MUST READ: NASH / BACKGRID USA: +1 310 798 9111 / usasales@backgrid.com UK: +44 208 344 2007 / uksales@backgrid.com <em>UK Clients - Pictures Containing Children Please Pixelate Face Prior To Publication</em>

Ahead of giving birth, Mara revealed onDr. Berlin’s Informed Pregnancy Podcastthat shesuffered a miscarriage before getting pregnantwith her daughter, explaining that she had a blighted ovum, which occurs “when a fertilized egg attaches itself to the uterine wall, but the embryo does not develop,” according toamericanpregnancy.org.

“It was weird, this bitter or sweet sort of … I was so excited, but also sad that we weren’t as excited as we were the first time, because that was clear that it was a very different dynamic,” she explained offinding out she was expecting againafter the loss.

Mara and Bell starteddating in fall 2015, and PEOPLEconfirmed their engagementin January 2017. The formerFantastic Fourcostars announced the following July on social mediathat they had tied the knot.

Mara posted a photo of herself and Bell kissing on what appeared to be the dance floor at their wedding on Instagram. Shecaptioned the photo, “Nuptials.”

Bell later shared the same photo on his respective account with the caption, “Mr. and Mrs. B.”

Speaking to James Corden in January 2018, Bell said, “We actuallygot married right across the streetfrom our house. I literally woke up in my own bed and walked across the street, and we had our ceremony.”

source: people.com