"Inspired by the #TimesUp campaign, tonight we stand with our brothers and sisters in music in support of equal representation in the workplace, for leadership that reflects the diversity of our society, workplaces free of sexual harassment and a heightened awareness of accountability that our sisters started on January 1st and continued through the Golden Globes and onward," the women behind Time's Up said in a statement before the ceremony.
"For those of us attending tonight’s 60th Annual GRAMMY Awards in New York City, we will wear a white rose, which has historically stood for hope, peace, sympathy and resistance. We hope you all join us in spreading the message of the white rose today. Tonight is music’s biggest night. The world is listening," the statement continued.
Clarkson chatted with ET's Nischelle Turner and Cameron Mathison on the red carpet about why she opted to hold the flower in her hand for the night.
"We had the dress planned before the white rose thing came up, so I went, 'I'll carry it romantically,'" Clarkson explained. "It is something that happens not only in the music industry, or in the film industry. It happens everywhere, even with my friends who have 'normal' jobs. And I think that's the whole reason."
Also carrying their roses in their hands were Eve, the ladies of Little Big Town (the men pinned them to their suits), Camila Cabello, Miley Cyrus and Andra Day, among others.
Lady Gaga pinned her white rose on her extravagant black Armani Prive gown, as did Alessia Cara. Pink and her family -- husband Carey Hart, daughter Willow and mom Judith Moore -- all had flowers as well. Meanwhile, Lana Del Rey and Heidi Klum wore theirs as corsages.
Among the men who arrived with a white rose pinned on their suits were Nick Jonas, Ben McKee, Daniel Platzman, Dan Reynolds and Wayne Sermon of Imagine Dragons, Andrew Taggart and Alex Pall of The Chainsmokers, Zayn Malik, Sam Smith and more.
For more on the Time's Up movement and why celebrities chose to wear white roses, watch below.