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

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.

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[photos via Getty, Instagram]