The 23-year-old singer was performing with her bandmates when a man stormed the stage and tried to wrap his arms around her, reported Entertainment Tonight.
"I am thankful that I or anyone else was not injured, as these incidents could have gone awry. I love the fans and appreciate their excitement and love for us, however, these situations could easily escalate in the wrong direction for us and the fans.
"I am fine though. I love our fans and am excited to continue performing my heart out on our 7/27 Tour," she said.
"Hi my loves, Just to let you know I am okay after the airport incident. Please be careful and gentle so no one gets hurt. That was scary! Thank you," she wrote.