And the star added a brown hat as she flashed a beautiful emerald ring.
She sat with her legs open on a grey lounger in a back yard.
Scout also had on orange-tinted aviator sunglasses.
The Willis girls have never been tame.
The 26-year-old artist, who is a poster girl for the Free The Nipple movement, is the daughter of actors Bruce Willis and Demi Moore.
She was revealing a small tattoo that appeared to be of the North star on her chest.