Enter Rita Regan, a Post Malone fan who got the "Circles" singer ... Though she was happy with Malone's art, she jokes she may have placed the tattoo "differently" had she not been as impressed.

Post Malone is going to tattoo ... the next day at the Bonaroo Music and Art Festival in Tennessee, which runs from June 13 to 16. That night, the “Circles” rapper is the headliner, with ...