It's weird how Taylor is so huge despite ALL her songs being ripped straight out of a boy-crazy teenage girl's diary. All of them. She doesn't even have a Roar or a Firework -- much less an ET or a Dark Horse -- that's more universal and not about boys. Even Shake It Off has lyrics about boys with hella good hair.
She's not huge.
Her numbers are because of her background in country.
Shania Twain has 2 Diamond albums and a Double Diamond album.