Kim Kardashian said in a Today interview on Monday that she supports Bruce Jenner's transition “100 percent.”

In a two-hour ABC special broadcast Friday, Jenner told Diane Sawyer that he identifies as female.

(Related: Bruce Jenner says he identifies as female.)

“It's not something that you or I could fully understand, but I don't even think we have to,” Kardashian told Matt Lauer.

Jenner, she said, has found “inner peace and just pure happiness.”

“I don't know what life would be like if you always felt like you weren't yourself. As long as he is happy, and he wants to live his life, however he wants to live it, that just makes me happy. And I support him 100 percent,” she said of her stepfather

E! announced Friday that a previously rumored eight-episode documentary series revolving around Jenner living as a transgender woman would premiere in July.