Blushing bride! Caitlyn Jenner said yes to the dress on an upcoming Sunday episode of I Am Cait. The Olympic gold medalist tried on a wedding gown for fun while shopping with her gal pals — and loved it.

The Keeping Up With the Kardashians star picked out a body-conscious white lace dress with a sweetheart neckline and mermaid train to model. She also wore drop earrings and kept her loose brunette locks down.

"Can I do the walk?" Jenner, 66, jokes to friends Candis Cayne and Ella Giselle in a sneak peek.

Kidding aside, Jenner was taken aback at first when she looked in the mirror. "Oh, Jesus Christ! Oh, my God," she says. "What do you think? I think we need to pose."

Jenner appeared to love her look. "Did I ever think that this day would come? No. I've been to three weddings, OK, with the most boring clothes on in life," she tells the camera about her nuptials to exes Kris Jenner, Linda Thompson and Chrystie Crownover. "Finally, I get to wear something comfortable."

Jenner didn't just twirl in her gown either. She and Cayne — who also wore a wedding dress — pretended to get married in a fake ceremony.

"I now pronounce you trans-bride and trans-bride," their friend says.

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

Watch the sneak peek in the video above!

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