In reply to erica.

Slow much? She's sold more than 100 million records WW, which qualifies her as being one of the best selling artists. In addition, she is the ONLY artist to have THREE diamond certified singles. She's tied with Michael Jackson on the record for most number 1s on an album. She's also the first artist to have 1 billion views on a video, and currently the only female with TWO 2 billion and FOUR 1 billion music video views on YouTube. OH!!!!!! AND SHE IS THE MOST FOLLOWED PERSON ON TWITTER!!!!!!! ;)