Between back to school shopping and fashion week, September is truly the month of fashion reinventions and celebrating personal style—and who are more stylish than our resident reigning pop stars?

PopCrush Best Dressed is a month-long competition to determine the ultimate style stars of 2017!

During the final round, Ariana Grande, who edged out Fifth Harmony with 57% of the votes in the last round, faces off against solo breakout and former 5H singer Camila Cabello, who beat out Rihanna with 68% of the votes—but which diva takes the throne as 2017's best dressed?

The battle concludes! Place your vote between Camila and Ariana Grande for 2017’s Best Dressed! The final round ends Monday, October 2 at 11:59 p.m. EST.

Camila Cabello Through the Years: