The "Diamonds" singer posted a sweet message for her mom Monica on Mother's Day and now she's telling the world how great her grandfather is.
Along with this photo collage, RiRi wrote a touching tribute to her grandpa for his birthday, saying:
"Happy Birthday Grandfadda Bravo!!!!! You are so special to all of us!!! If it wasn't for you buying out the whole tray of mangoes from gran gran Dolly that one day you got off your ship in Guyana, and charmed her with that smile laced with a gold cap, NONE of us would be here!! So Im saying a special thanks to you for having the heart of a Lion, my Scorpio King, Legend!!! They will never know what it took for you to get us here!! I love you way past unconditional!!! You're true az steel BRAVO!!!!#BirthdayBoy"
Aww...we love that Rihanna isn't afraid to show her softer side--we know she isn't shy about showing any of her other "sides," but this one is by far our favorite!