Carey Mulligan reportedly pregnant with her first child

We thought that was a baby bump!

Carey Mulligan is apparently expecting her first child with husband Marcus Mumford.

The 30-year-old actress, who was snapped wearing a loose-fitting gown at the 2015 Tony Awards on Sunday night (below), is reportedly halfway through her pregnancy.

"They weren't planning on announcing," a source told Us Weekly. "But she hasn't stopped working. Everybody around her is being very supportive. The show ends soon and they're going back to England after."

Carey has spent the past few months starring alongside Bill Nighy in the Broadway production Skylight.

"She is feeling wonderful," an E! News source added. "She is really excited to finish her projects up in the next coming months and enjoy some time off to just focus on her and family.

"Her pregnancy has been going well and she is trying to take it easy in between press with her new film Far from the Madding Crowd and her show on Broadway."

The rumour mill has been in full force since The Great Gatsby star was spotted cradling what looked like a bump at the April world premiere of Madding Crowd...

This will be the first child for the British star, who tied the knot with the Mumford & Sons frontman in 2012.

Far from the Maddening Crowd, the latest film adaptation of Thomas Hardy's classic novel, hits cinemas on June 25, 2015. See the trailer below…