Scarlett Johansson sparks wedding rumours with diamond ring

Scarlett Johansson has left her fans wondering whether she has secretly married her fiancé Romain Dauriac. Just two days after she referred to Romain as her 'boyfriend', Scarlett, 29, stepped out wearing what appeared to be a glittering wedding band on her ring finger.

On Tuesday evening, while hosting the second annual Hurricane Sandy fundraiser with her twin brother Hunter, Scarlett flashed a thin diamond ring alongside her engagement ring.

Scarlett sported the glittering ring on Tuesday evening

While there has been no confirmation from Scarlett herself, her fans began to speculate she may have married advertising agency owner Romain in private.

Scarlett has not been referring to Romain as her husband, however. When asked what makes her laugh as part of Marie Claire's 20 Questions, the Girl with a Pearl Earring star answered, "My boyfriend and [comedian] Louis C.K."

During the interview Scarlett also revealed that her greatest joy is her family, "and key lime pie" and that her Bette Davis, David Bowie and Bono are her dream dinner party guests.

Scarlett and Romain became parents in September 2014

New York-born Scarlett, who has a three-month-old daughter called Rose with Romain, was previously married to Canadian actor Ryan Reynolds. She got engaged to Romain in September 2013, a year after they first started dating.