Justin Bieber is 22 and has an epic birthday party with a bunch of celebs including Kourtney Kardashian, Hailey Baldwin, Diddy, Travis Scott, King Bach. Starring . Subscribe for more celebrity news! ▻▻ Check Out The Breakdown of All the Selena Gomez, Hailey Baldwin, and Justin Bieber Dating . Apparently theres no bad blood between Hailey Baldwin, 19, and Kourtney Kardashian, 36…even though theyve both had relationships with Justin Bieber, 21, . Stephen Baldwin says its wrong to put a label on his daughter Haileys relationship with Justin Bieber, but it doesnt matter . he says Biebs is the best.