In reply to Aj.

No offense, as I'm not a fan of Nicki or Cardi, and your point about the music world being bigger than just the US is a big one, but you're incorrect about the biggest girl group in the world. For the past 11 years until now it's a South Korean k-pop group, Girls' Generation, actually. They have some of the top-grossing tours of all-time, with FAR fewer dates than any Western acts and if you include YouTube views and streaming, they are the #2 female group or solo artist of all-time too. I don't know if you'd like them or not, but you might want to give them a listen if you'd in the mood fo something different. Enjoy Little Mix either way though! :)