Lily Gladstone at the 26th Costume Designers Guild Awards.Photo:Michael Buckner/Variety via Getty

Lily Gladstone hollywood 02 21 24 red dress costume designers guild

Michael Buckner/Variety via Getty

Lily Gladstonehas quite the outfit planned for the 2024Oscars.

Speaking exclusively to PEOPLE at the 26th Costume Designers Guild Awards on Wednesday, the actress, 37, shared that she thinks her attire will “definitely” be a “showstopper.”

“Definitely museum-worthy, I would say,” Gladstone tells PEOPLE at the event, which was held at NeueHouse Hollywood in Los Angeles.

Gladstone, who is of Siksikaitsitapi and Niimiipuu heritage, is making history at this year’sOscarsafter becoming thefirst Native American actress to be nominatedfor an Academy Award. She’s in the running for Best Actress for her performance as Mollie Burkhart inKillers of the Flower Moon.

Lily Gladstone attends the 26th Annual Costume Designers Guild Awards.Amy Sussman/Getty

Lily Gladstone hollywood 02 21 24 red dress costume designers guild

Amy Sussman/Getty

“It’s going to be just ongoing proof that Indigenous design belongs on red carpets with luxury fashion in a very centerpiece kind of way. I’m excited,” Gladstone, who is the fourth Indigenous actress to earn a nomination in the Best Actress category, continues of her upcoming red carpet look.

For Wednesday’s event, Gladstone added a pop of color to proceedings, wearing a red sequin Valentino outfit featuring a jacket with ruffled sleeves and a trail and matching flared pants.

“Valentino made it custom for me. It was one of the several options that we’ve had this whole season and it felt like tonight, being here amongst costume designers, it was time to bust out something that was really stunning structurally, texturally, that’s made a big, bold statement,” theBillionsstar tells PEOPLE.

Gladstone with ‘Killers of the Flower Moon’ director Martin Scorsese and her costar Leonardo DiCaprio.Emma McIntyre/WireImage

Martin Scorsese Lily Gladstone Leonardo DiCaprio Governors awards hollywood 01 09 24

Emma McIntyre/WireImage

“And the color red, wearing it campaigning this film, particularly, it’s the color of visibility for Missing, Murdered Indigenous Relatives, which is kind of the heart of the arc that my character has,” she adds.

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source: people.com