But if there was one member of his family we we're sure would be going, it's his father Caitlyn Jenner.
However, now it's being confirmed that even she won't attend the wedding, and the excuse is weak.
A source close to the family says that Caitlyn "has work commitments that have been set up for months and couldn’t be changed in the end."
The source continues, saying that, "everything is good" between the two, adding that Caitlyn, "will be throwing a big party for them when the newlyweds return to town."
Caitlyn did however attend the bridal shower.
"Went to my first bridal shower," Caitlyn captioned a photo of her and Kaitlynn. "I had so much fun! PS so much better than Bachelor parties!"
"I’m so happy you were there!!!" Kaitlynn commented on the post. "It meant a lot to me!!"