Late Sunday night, a man opened fire on an outdoor concert in Las Vegas, killing at least 50 and injuring more than 200 in what is now the deadliest mass shooting in American history. Celebrities are taking to social media to share their devastation over the tragedy and support for those affected.

Lady Gaga

Taylor Swift

Jason Aldean

Celine Dion

#lasvegas #prayforlasvegas

A post shared by Céline Dion (@celinedion) on

Barack Obama

Jake Owen

Mariah Carey

Paris Hilton

Ruby Rose

Sam Smith

Khloé Kardashian

Mandy Moore

Chelsea Clinton

Via Marie Claire US