Are you all delusional? Look at the dates. Rihanna posted the tweet first, then it was Rita. I can't see any shade here.
Are you stupid?
Someone took a screenshot of both tweets, stuck them together, and posted it on instagram saying that Rita copied Rihanna. Rihanna then liked the picture. That's where the shade is coming from.
Barely two Bey's stans posted before you guys made it all about her. There were more Gaga's stans, some Katy's stans and ever Taylor's stans but you always focus on Beyoncé's fans posts for some reason and do the most out of it. It is hilarious.