It certainly isn't lost on the 31-year-old reality star on what a honor this is for the 65-year-old former Olympian
. "It's a huge deal. Absolutely. I'm always there to support Caitlyn," he said while at Tuesday's Spy Chatter App launch event at The Argyle in Hollywood. "There's a lot -- a lot of moving parts. I'll just say that. We do have a big family."