Rihanna Honors Grandma With Tattoo on Her ... Goddess Isis apparently stands for the 'complete woman' By Evann Gastaldo, Newser Staff Posted Sep 10, 2012 10:36 AM CDT 6 comments Comments Rihanna arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP) (Newser) – Rihanna has chosen an … interesting way to honor her late grandmother, Gawker reports. The singer yesterday posted a kinda-NSFW photo of a new, very large tattoo (apparently of the goddess Isis) located under her breasts. She also posted the accompanying message, "Goddess Isis- Complete Woman - Model for future generations- #GRANGRANDOLLY - always in and on my heart #1love." Rihanna's grandma died over the summer.