Rennie Dress Lilac Mangrove Ecosystem. Total babydoll vibes with our new Rennie Dress! She offers an all over ruched fabrication, double lined material with a top mesh layer, a tie up halter neck, an invisible back zipper and a dainty tie up detail at the bust. Style her with your go to heels and a pair of silver hoops to kick start your night. FABRICATION: 100% polyester SIZING: Mehr's height is 164cm 5'4 and wears a size 6.