Carly Pearce celebrated three years of Grand Ole Opry membership on Saturday (Aug. 3), and to mark the day, she showed fans her new, Opry-themed tattoo. On Instagram, she shared a close-up shot of her new ink: A small black-and-white postage stamp stylized with a guitar, the words “Grand Ole Opry” and “WSM,” and the year she was inducted. Long before she officially got her invite, Pearce was vocal about how special the Grand Ole Opry was to her — and on the night she was inducted, she promised to keep the legendary stage close to her heart forever. Now, she’s taking that promise one step furth…