Brody Jennerwill be walking down the aisle soon but a few family members will not be attending his Nihi, Sumba Island wedding to fiancée Kaitlynn Carter.

“My two little sisters, we never even heard from them. They never even RSVP’d I don’t think,” Jenner, 34, tells PEOPLE of his half-sistersKendallandKylie Jenner.

“We sent them an invite but we just never heard anything back,” the soon-to-be groom says. “Well, they’ll be missed. I would have loved to have had them there.”

Though Brody claims Kendall, 22, and Kylie, 20, have not responded to their wedding invitation,Caitlyn Jennerhas.

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A source close to Caitlyn and Brody tells PEOPLE that “Caitlyn has work commitments that have been set up for months and couldn’t be changed in the end.”

Scheduling conflicts aside, “everything is good between them,” the source says. “She will be throwing a big party for them when the newlyweds return to town.”

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Meanwhile, Brody’s brother Brandon, who is the best man, and mother Linda Thompson are at the Indonesian island. “#JennerIsland celebration continues embracing Balinese culture with @brodyjenner & @kaitlynn #love&marriage,” Thompson wrote on Instagram Monday.

In February, Brody revealed it’s been “a couple years” since he last spent time with Kylie, who gave birth to her first child, daughterStormithat same month.

On the other hand, Caitlyn has been supportive of the couple’s relationship, even celebrating her future daughter-in-law in April when she attended thebridal showerat the Santa Anita Park racetrack in Los Angeles.

“Went to my first bridal shower. I had so much fun! PS so much better than Bachelor parties!” Caitlyn shared on Instagram.

“I’m so happy you were there!!! It meant a lot to me!!” Carter commented.

Carter celebrated herbachelorette partyin Colombia in late April.

source: people.com