Scarlett Johansson is expecting her first child with fiancé Romain Dauriac, according to a report on E! News this week.

The website said "multiple sources" had confirmed that Johansson is pregnant, although the 29-year-old Avengers actress has yet to release a statement on the news.

It comes six months after Johansson confirmed her engagement to Dauriac, a French journalist. The pair began dating in November 2012, a year and a half after the star divorced her husband of three years, Ryan Reynolds.

Showing off her vintage Art Deco diamond engagement ring at the Venice Film Festival last August, Johansson said she was "very happy".

"He’s my buddy," she told People, of her Paris-based partner. "Being engaged is an exciting time to enjoy and to really savour."

Scarlett Johansson 'expecting first child' with fiance Romain Dauriac