Popsugar Celebrity Halloween Costumes 2019 Celebrity Couple Halloween Costume Ideas 2019 25 Celebrity Couples You and Your Significant Other Can Be This Halloween 19 September 2019 by Kelsie Gibson View On One Page Photo 13 of 25 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 13 Street Style Justin Bieber and Hailey Baldwin What to wear for Justin: A plain white t-shirt, red sweats, sneakers, and a white baseball cap. What to wear for Hailey: A cropped t-shirt with a stylish oversized blazer and pants. Previous Next Start Slideshow Halloween Costumes 2019Celebrity CouplesHalloween Costumes