The star of 'Avengers: Age of Ultron' was overheard talking about her wedding plan at a dinner held by Martha Stewart at her East Hampton estate on July 19, reported Ace Showbiz.
In addition to Johansson and her journalist beau, the dinner was attended by Matt Lauer, Nathan Lane, Barbara Walters, Susan Lucci, Christopher Meloni, Dan Abrams, Andrew Saffir and Daniel Benedict, Thom Filicia, Gucci Westman and David Neville, Dylan Lauren and Rachel Zoe among others.
Johansson, 29, and Dauriac got engaged last September. The couple is now expecting their first child together.
The actress is also gearing up for the premiere of her new movie "Lucy". Written and directed by Luc Beson, the science fiction flick tells the story of Johansson's titular character who has superhuman abilities.