If there’s one thing that rockstar Rihanna loves, it’s tattoos. Over the weekend, we caught the 24-year-old singer covering another tat–this time on her abdomen. Leaving a London tattoo spot, she rocked a cutoff ‘HEART’ sweatshirt which revealed bandages.

Rihanna shared a photo of her new ink, noting that it was honor of her late grandmother:

Goddess Isis- Complete Woman – Model for future generations- #GRANGRANDOLLY – always in and on my heart #1love

This would be about the 15th piece of permanent body work. To date (she started getting ink in 2006) Rihanna’s got music notes (on her foot), a pisces sign (behind her ear), a star (in her ear), a Sanskrit Prayer (along her hip), an Arabic Phrase (on her rib cage), a trail of stars (along the back of her neck) and the list goes on and on. P.S. Is she going overboard w/ the ink?