Kaya Scodelario is pregnant.

Kaya Scodelario [Instagram]

Kaya Scodelario [Instagram]

The 'Maze Runner' actress and 'Abraham Lincoln: Vampire Hunter' star Benjamin Walker are expecting their first child together, and Benjamin, 33, announced the pregnancy with a sweet snap of them and their French bulldog Arnie on Instagram.

Benjamin's picture shows the pair kissing on a beach, with 24-year-old Kaya's bump clearly visible and he captioned it: "Happy summer from the four of us."

He added: "I love you @kayascods."

Kaya added her own picture and wrote: "I love you @findthewalker. I love our little family."

She also posted the image on Facebook and said: "The family is expanding. And no we are not getting another dog, Arnie would be way too jealous."

Benjamin and Kaya - who met on the set of 'The Moon and the Sun' - got engaged in December 2014 after just a few months of dating and tied the knot one year later.

He married Meryl Streep's daughter, Mamie Gummer in 2011 but the pair separated in March 2013.

Kaya moved to New York to be with Benjamin after previously admitting she found maintaining a long-distance relationship tough.

She said in October: "Ben lives in New York and I live in London, so we have to work hard to see each other. You have to go for it, which I like."

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