But what exactly is it? At its core, coastal grandma style is about effortless elegance. It’s the look of a woman who knows ...

Davis Bourgeois Pepke wore a backless dress to her nontraditional wedding. She plans to shorten the gown and wear it again.

wore a look by Simone Rocha: a sheer black tulle top with 3D roses and a matching sheer skirt. "My grandma asked me in the car, she's like, 'Are you nervous?'" the star told PEOPLE on the red carpet.