Either Madonna, Rihanna or Celine.

Celine.

Rihanna by a long shot, followed by Britney, Ariana and then DNCE.

Celine Dion.

britney, rihanna, celine & kesha. forgot to vote for celine though

Honestly, I liked every live performance to a certain extent, but Rihanna was definitely the best.

THIS is what I call entertainment.

Rihanna, then Kesha, then Ariana

Honestly, these are 3 of the best award show performances I've seen in this decade. Top notch in different ways