Just days after YouTube sensation Cimorelli released their debut original song to big numbers , the sisters are revealing another major stride in their journey to becoming a mainstream music act — working with Lady Gaga’s newly-named choreographer Richard Jackson . Featured prominently in the group’s new video for “Million Bucks” (watch below), Jackson is seen training the six Cimorelli sisters in a dance studio, readying them for their forthcoming live stage performances. In addition