Tiffany Alvord

Tiffany Alvord (born December 11, 1992) is a singer and songwriter. She has been cited as one of YouTube's first "home-grown celebrities" and has a large social presence on YouTube with over 300 million video views and over 1.4 million subscribers, making her channel among the top 50 most subscribed music channels on YouTube. In December 2012, Alvord performed in Times Square on the Nivea stage with Carly Rae Jepsen, Train, PSY and Taylor Swift as part of the 2012 New Year's Eve celebration.

source: Wikipedia