Halloween, Hollywood style! Hailey Bieber, Kylie and Kendall Jenner, and Christina Aguilera get into a spooky mood
Hailey Bieber rocks a chic outfit as she steps out with husband Justin Bieber in Beverly Hills
Christina Aguilera transforms into her Burlesque costar Cher while Justin and Hailey Bieber make a cute Flintstones couple as they join stars dressing up on Halloween eve
