PIC: Rihanna Gets Huge Tattoo Beneath Breasts to Honor Late Grandmother

Rihanna arrives at the MTV Video Music Awards on September 6, 2012 in Los Angeles, California. Jeffrey Mayer/WireImage.com

Rihanna's body art project continues!

The "Where Have You Been" singer, 24, took a break from a jam-packed several days — a newsmaking-appearance at the MTV Video Music Awards Thursday and a sexy Closing Ceremony performance Sunday at the Paralympics in London — to share her newest tattoo via Twitter and Instagram.

Sharing a topless (but still PG-13) photo, Rihanna revealed some dramatic new ink on the very top of her ribcage depicting the feathered Egyptian goddess Iris. The latest body art is a tribute to her beloved grandmother, Dolly, who passed away in late June.

"Goddess Isis- Complete Woman," Rihanna writes in the caption for the topless tattoo reveal."Model for future generations- #GRANGRANDOLLY – always in and on my heart #1love."

rihanna chest tattoo
Rihanna Instagram

In London on Sunday, she wowed tens of thousands of fans as she sang "Princess of China" with Coldplay in a seriously steamy performance with frontman (and Gwyneth Paltrow's husband) Chris Martin. At the VMAs in Los Angeles three days earlier, it was her off-stage behavior that caused the most comment: Winning the Video of the Year award for "We Found Love," she hugged and kissed — on the lips — her abusive ex-boyfriend Chris Brown.

The chart-topper may or may not have been alluding to her former beau, 23, and their surprising VMAs PDA via Twitter on Saturday with a series of messages. "Heartbreak . . ." she wrote. "I was his Marilyn Monroe . . . A James Dean on the low. What's love without tragedy?"

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!