Caitlyn Jenner Is (Finally!) Going to Star on 'Transparent'

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Caitlyn Jenner is a reality star, Olympian, motivational speaker and now...actress!

The 66-year-old I Am Cait star will appear in the upcoming third season of Amazon's Transparent, her rep confirmed to ET. AP broke the news, when creator Jill Soloway revealed the casting was "a dream come true" at the GLAAD Media Awards on Saturday.

WATCH: Caitlyn Jenner Flips Her Position on Hillary Clinton, Faces Protests in Chicago on 'I Am Cait'

Soloway posted a photo from the GLAAD Awards with the cast and crew of her award-winning series -- including Jenner and co-producer Zackary Drucker, who appears on both shows -- and captioned it, "It all happened in the ladies room #transparenttv"

Jenner posted a picture hugging Judith Light, who plays Shelly Pfefferman on Transparent, and wrote, "So excited to be at the #glaadawards tonight with the incredible @judithlight and the rest of this wonderful crowd!"

Both series took home awards over the weekend, with I Am Cait tying TLC's I Am Jazz for Outstanding Reality Program, while Transparent won Outstanding Comedy Series.

WATCH: Demi Lovato and Caitlyn Jenner Shine Bright With Big Wins at the GLAAD Media Awards

It hasn't been revealed yet whether Jenner will play herself on Transparent or act in a part -- we hope the latter -- but the casting announcement is interesting, considering star Jeffrey Tambor told ET that Jenner guest-starring was not going to happen.

"I don't think that's our show, no," Tambor said at the Golden Globes in January, though he added that he would be more than happy to have Jenner visit the set. "She can come to craft service anytime,” he said with a smile. “I will walk her around and give her finger sandwiches."

Soloway previously revealed her "sweet" and "supportive" friendship with Jenner, telling ET, "A lot of the women who are on I Am Cait are associated with our show. It's a very small community in Los Angeles, and we're all part of the same group. We all love each other and support each other."

The GLAAD Media Awards also featured a surprise appearance by Taylor Swift, who honored her friend Ruby Rose. Check out the touching moment in the video below.