Today is National Gun Violence Awareness Day, and everyone from Barack Obama to Kim Kardashian is participating in the #WearOrange movement to bring attention to the cause.

Amy Schumer, a vocal advocate for the cause, knows there is one thing that always gets attention: butts. And so she posted a selfie wearing just an orange sports bra. Well, she says it's orange. It looks more pink in the photo, but that might just be the filter.

Today please #wearorange for gun safety! #everytown A photo posted by @amyschumer on Jun 2, 2016 at 10:37am PDT

The issue became personal for her after a gunman opened fire during a screening of her movie, Trainwreck, and two people lost their lives. Since then, she's been working with her cousin, Sen. Chuck Schumer, to fight for new gun control legislation.

Schumer also Instagrammed a couple photos of her wearing a color that is definitely orange, like this shot from Trainwreck.

Please remember tomorrow to #wearorange to promote gun safety A photo posted by @amyschumer on Jun 1, 2016 at 9:09pm PDT

Scumer captioned a photo of her and friends wearing orange to pay tribute to the victims of the movie theater shooting, "thinking of you every day Mayci and Jillan."

Me and my honeys on set like to #wearorange thinking of you today and everyday Mayci and Jillian A photo posted by @amyschumer on Jun 2, 2016 at 12:16pm PDT

Plenty of other celebrities like Julianne Moore and Spike Lee are joining Everytown's movement and posting selfies for the cause.

People- Tomorrow Is National Gun Violence Awareness Day. 91 Americans Die Every Day Due To GUNS. #WEARORANGE A photo posted by Spike Lee (@officialspikelee) on Jun 1, 2016 at 3:41pm PDT

America is turning orange for National Gun Violence Awareness Day!



Show your support. #WearOrange and pass it on! pic.twitter.com/UQBxmQNoN7 — Moms Demand Action (@MomsDemand) June 2, 2016

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