The deal is reportedly worth $1.5m and will give singer 15 per cent of their gross earnings

BEYONCÉ HAS signed three YouTube singing stars to her Parkwood Entertainment company for a total of $1.5 million, according to reports.

One contract covers Los Angeles-based sisters Chloe and Halle Bailey, 17 and 15, who blew up on the video sharing site in late 2013 with their cover of… [Read more on The Voice]