Becky with the good hair

Ok, Lemonade Nation (LemoNation?). I’m stuck on Becky With the Good Hair. I can’t stop reading theories about who it might be. Is it Rachel Roy? It’s not Rachael Ray. Maybe it’s Rita Ora? It can’t be Iggy Azalea, though this piece called her Darth Becky and it’s so good. Is it Rihanna? WHO IS BECKY?