Justin and Hailey Bieber are setting a date for their formal wedding celebration next month.
Sources say it will go down in September for close friends and family to help celebrate their marriage. The timing shouldn't come as much of a shock, since they got hitched last Sept. 13 at an NYC courthouse.
The party will serve as both an anniversary and wedding party.
Justin posted a love letter to Hailey Thursday, saying, "I fall more in love with you every single day. You are the greatest thing that has ever happened to me. I would be lost without you."
Justin and Hailey have had 3 false starts on a formal wedding celebration ... the dates weren't working for some of the guests so the "save the date" had to be scrapped 3 times.
There is no word yet if the party will be in Canada or the US.