Kate Mara reveals she is expecting another child

Actor Kate Mara said she and her husband Jamie Bell are expecting another child.

A representative for the actress also confirms

Mara, 39, revealed that the couple is expecting

another child in an Instagram post on 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, the A Teacher star dons

a short pink dress with silver embellishments on top.