Multiple sources confirm to Us Weekly that the duo decided to call it quits after a little over a year of dating.
Hearst, a judge on Oxygen's model competition show The Face, told Access Hollywood in March that she met Connolly "through mutual friends and Facebook."
"Actually, I think I might've hit him up. It was a while ago," she said. "It's been over a year. But I love him to death and I'm very happy."
2014: The Year in Fashion [PHOTOS]
Mindy Kaling mistaken for Malala Yousafzai