Leighton Landroche, 30, has been a fan of Justin Bieber ... of Leighton Landroche Being a wedding planner herself, Landroche was ready to create the Bieber-themed party of her dreams.

Justin Bieber allegedly shared a cryptic message targeting his ex-girlfriend after she shared ... features lyrics like "I can see it now, the wedding of the year" and "When all my ghosts disappear." ...

Seemingly missing from the celebrity meet-up was Justin's wife Hailey Bieber. Speculation about the couple's marriage has ramped up in recent months, particularly after a source told DailyMail.com ...

And on Wednesday, Justin congratulated Hailey on the successful launch while sharing several racy photos of them together at the invite-only soiree. 'Congrats baby on your beautiful pop up ...