Forget naked-dresses, one of the biggest trends so far on the Oscars red carpet is a little more subtle: blue ribbons.

They've popped up on the designer gowns and tuxes of stars in support of the American Civil Liberties Union, a nonpartisan, nonprofit organization that aims to defend and protect individual rights and liberties.

Who has already been seen sporting the political accessory?

Loving's‚Äč Ruth Negga

“They're a huge part of our film. They helped Richard and Mildred change the Constitution of the United States and they fight for civil rights, and I’m for that,” she told USA TODAY on the red carpet. “I think that charities like that are important now and they're kind of like a watchdog of sorts, and that’s important in our society.”

Lin-Manuel Miranda (and his mom)

Model Karlie Kloss

Model Karlie Kloss attends the 89th Annual Academy Awards.   (Photo: Frazer Harrison, Getty Images)

On Saturday night, Casey Affleck also wore a ribbon to the Spirit Awards and used his acceptance speech to comment on Trump’s administration.

“The policies of this administration are abhorrent, and they will not last, and they are really un-American,” he said while accepting his award.

Star support for the ACLU predates this weekend, however.

Sarah Paulson used her SAG Awards speech to ask for ACLU donations in January. And back in October, Saturday Night Live star Sasheer Zamata parodied white privilege in a hilarious ACLU video.