Rihanna tweets world leaders and Justin Trudeau is the latest to respond

She's a global pop icon, they are G20 leaders. So what happened when Rihanna tweeted some of the world's most powerful men to talk about their commitment to education in the developing world?
Well, some of them responded and their exchanges are there for us all to see on social media.
It started earlier this week when the singer and fashion icon, who has 74 million followers on Twitter, publicly messaged the leaders of France, Argentina and Canada, plus the spokesperson for Germany's Angela Merkel.