Justin and Hailey Bieber, Megan Fox and MGK, More Are Couple Costume Goals

Hailey Bieber gives a leggy display in  black leather miniskirt alongside husband Justin as they take their dogs for a walk... after rocking Flintstones costumes at celeb Halloween bash

Hailey Bieber brings Pebbles Flintstone back to life in a racy PVC costume as shirtless husband Justin revives Bamm-Bamm at Vas J. Morgan's Halloween party

Lance Bass Thinks We Should Leave Justin Alone