Scarlett Johansson shows off engagement ring

Scarlett Johansson's new art-deco style diamond engagement ring was on display at the New York premiere of her new movie, "Don Jon," on Thursday.

Charles Sykes / AP
Scarlett Johansson's new film,

Last week, Johansson's representative confirmed that the actress, 28, is engaged to French journalist Romain Dauriac, but said no wedding date has been set.

The actress stars in "Don Jon" with Joseph Gordon-Levitt. Gordon-Levitt plays a man who is addicted to pornography, and Johansson and Julianne Moore portray the two women who help change him. The film opens Sept. 19

Johansson and actor Ryan Reynolds divorced in 2011.

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