Throughout the photoshoot, Hailey wore a shiny bucket hat by CC Beanie. The hat is called the Shiny Rain Bucket hat and the color Hailey wore was mint. The hat quickly sold out after photos of Hailey wearing it were shared across multiple platforms.
https://celebrityinsider.org/hailey-bieber-shows-off-her-perfect-beach-body-in-brazilian-bikini-see-the-look-459624/