Kate Mara, husband Jamie Bell expecting their first child together

Actor Kate Mara and husband Jamie Bell are expecting their first child together. The actor shared the news on Instagram with a picture. In the photograph Mara, 35, showed off her bump in a white and silver dress as she stepped out for Elton John's annual AIDS Foundation Oscars Party.

"Went on a date with our bun in the oven," she captioned her photo. The baby will be first for Mara while Bell shares a son with ex-wife Evan Rachel Wood. Mara and Bell started dating in 2015. The former "Fantastic Four" co-stars announced in July on social media that they had tied the knot.