Caitlyn Jenner shocked the world when she first came out as transgender to Diane Sawyer earlier this year. But there was one person who wasn't surprised in the slightest.
The 66-year-old's oldest son, Burt, revealed to Esquire that he'd actually known the truth about the former Olympian's gender identity for two-and-a-half decades, saying:
"A lot of people don't know that this is something that I've known now for, I think, 25 years. Before I was allowed to tell anybody, or before my dad even knew that I knew, I went and marched on behalf of Prop 8 through the streets of Los Angeles. I've always tried to be an outspoken supporter of the LGBT community."
The 37-year-old has always had his prominent parent's back, and remembers one time he contemplated dressing up as Lady Gaga for Halloween.
Related: Caitlyn Named One Of Glamour's Women Of The Year!
He admits he wondered if people would assume he was transgender once Caitlyn came out, but decided that didn't matter, and followed through with the costume:
Tags: burt jenner, caitlyn jenner, celeb kidz, diane sawyer, esquire, family, halloween, lady gaga, lgbt, olympics, transgender