Early Monday morning, Justin took to Instagram to share a photo of himself and Hailey as kids with his mom, Pattie Mallette, and Hailey's parents, Stephen and Kennya Baldwin. The throwback shot has hearts drawn over bride and groom.
Last week, 22-year-old Hailey celebrated her bachelorette party with her pals, including Kendall Jenner. The couple has been legally married since last September, but is planning an intimate wedding with their family and friends this week.
For more on the upcoming nuptials, watch the clip below: