Rihanna Got a Massive Underboob Tattoo in Memory of Her Late Gran Gran [NSFW]S

Or is that in mammary of her late Gran Gran? (Sorry, couldn't resist.)

Rihanna Got a Massive Underboob Tattoo in Memory of Her Late Gran Gran [NSFW]S

Either way, Bad Girl RiRi flashed her new ink on Instagram along with the caption, "Goddess Isis- Complete Woman – Model for future generations- #GRANGRANDOLLY - always in and on my heart #1love."

Gran Gran Dolly being Rihanna's dearly departed grandma Clara "Dolly" Brathwaite, who passed away earlier this year of cancer at the age of 80.

[photos via Getty, Instagram]