Meghan Trainor has truly become a force to be reckoned with...as an accidental pop star. Her debut single will be diamond-certified soon, her debut album will be platinum by the end of the year (regardless of the fact that it's taking her so long), and she'll be playing arenas next year with her next album. It's amazing how she couldn't find anyone to give "All About That Bass" too and so she just decided to record it herself and....BAM! She definitely had the best year in 2015. She needs to take care of her voice, though, because she's been cancelling shows left and right for vocal hemorrhage. I don't know how Ariana is able to do all those shows without cancelling.