Hailey's older sister Alaia Baldwin took to Instagram to share a snap of the sisters ahead of their big night.
In July 2018, Bieber, 25, popped the question, and announced his engagement to Baldwin in a sweet Instagram post.
“Hailey I am soooo in love with everything about you! So committed to spending my life getting to know every single part of you loving you patiently and kindLY. I promise to lead our family with honor and integrity letting Jesus through his Holy Spirit guide us in everything we do and every decision we make. My heart is COMPLETELY and FULLY YOURS and I will ALWAYS put you first! You are the love of my life Hailey Baldwin and I wouldn’t want to spend it with anybody else.”
WATCH: Hailey Baldwin flaunts her wedding ring