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Scarlett Johannson 34, looked stunning in the fitted gown with a thigh-high split as put on a very leggy display during the the launch of the Marriage Story in Italy, while sat in the audience during the premiere Jaw-dropping: Scarlett dazzled onlookers in a beautiful red sequinned gown on Thursday as she led the star-studded arrivals for the film premiere at the 76th Venice Film Festival As she walked the red carpet, Scarlett ensured that all eyes were on her as she wore a fitted scarlet gown covered in delicate sequins from the designer Celine

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See my picks for the best black tie summer wedding guest dresses below

There is detailing on the dress, as well as roses that can be seen on each arm and on her neckline

Then, its time to go shopping armed with these tips and a good idea of the types of formal dresses you should look out for