Rob Kardashian and Blac Chyna set their wedding date for July 17, 2017, for a very special reason.

According to Rob “The number Seven is my lucky number, and he’s extremely superstitious, so picking a date was very important to him,” an insider says, adding that Rob wanted to get married on his actual birthday, March 17, but Chyna wanted more time to get her body back into shape after welcoming their baby daughter, Dream Kardashian, on Nov. 10.