Of course Miley Cyrus would pose on top of her dad Billy Ray Cyrus' truck in designer heels, a racy t-shirt and nothing else: She's just being Miley.
Miley's photoshoot was designed to advertise her new merch: t-shirts and sweatshirts that say "Miley Cyrus Made Me Realize I Am Gay." She's wearing a pink sleeveless version of the shirt, which also includes a NSFW addition stating the wearer's specific sexual preference, with a couple of anatomically-specific doodles.