Caitlyn Jenner Tears Up While Trying on a Wedding Dress: I Can Finally Be 'Comfortable'

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Caitlyn Jenner is finally wearing the wedding clothes she belongs in.

On an emotionally-charged new episode of I Am Cait, the 66-year-old former Olympian tries on white wedding gowns with her friend, Candis Cayne.

"For almost all of existence, that wasn't even an option for trans women," says Candis, highlighting the importance of the moment.

WATCH: Kris Jenner Says Caitlyn Jenner's Interest in Dating Men Is 'Confusing'

"Did I ever think this day would come? No. I've been to three weddings with the most boring clothes on in life," Caitlyn reveals, before tearing up. "Finally, I get to wear something comfortable."

It's a particularly moving moment, but the good feelings don't last long, as evidenced by another new clip where Caitlyn and former wife Kris Jenner get into a tense argument over when she was told about her ex's transition.

PHOTOS: Caitlyn Jenner Competes in First Golf Tournament Since Transitioning

"No," replies Kris, when asked if Caitlyn told her early on, to which she replies, "Oh, I did too."

"I couldn't have given you the definition of transgender until six months ago," Kris adds.

Watch the video below.

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

I Am Cait
airs Sundays at 9 p.m. PT/ET on E!.

This season of the docuseries has dealt a lot with how Caitlyn's family responded to her life-changing decision to show the world who she truly is.

Watch the video below to see Scott Disick reveal how his kids reacted to meeting Caitlyn for the first time.