Popsugar Celebrity Hailey Bieber Justin and Hailey Bieber Relationship Timeline Justin and Hailey Bieber's Love Story Through the Years 19 September 2023 by Alicia Geigel View On One Page Photo 9 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 9 September 2021: Justin and Hailey Bieber Attend Their First Met Gala Together The Biebers made their joint Met Gala debut in September 2021, taking to the red carpet in coordinated black attire. Previous Next Start Slideshow Hailey BieberRelationship TimelineCelebrity FactsCelebrity CouplesJustin Bieber