Its JoJo Siwa

JoJo Siwa (born May 19, 2003) is an American YouTuber, actress, and internet personality. She is known for being on the cable television network, Nickelodeon. Her YouTube channel currently has over 6 million subscribers and 1 billion video views as of April 2018.

About
JoJo started her television career as a contestant on Abby's Ultimate Dance Competition in 2013. She has appeared in some TV shows such as "Dance Moms", "The Thundermans" and "Bizzardvark". On February 19, 2018, she starred in the Nickelodeon TV movie "Blurt!" along with Henry Danger star Jace Norman voicing the character Victoria Martin.

On May 6, 2016, JoJo released her first single called "Boomerang" which deals with the issue of cyberbullying. The video was uploaded on her YouTube channel on May 17, 2016 and has received over 500 million views.