Knowles... Run The World! Sisters Beyonce and Solange go head-to-head as they compete for Best International Female Solo Artist 2017 BRIT Award

She admitted to being her younger sister's biggest fan in a recent feature during which she interviewed her sibling.

But Beyonce, 35, and Solange, 30, will now battle it out as they go head-to-head at The BRIT Awards 2017 with Mastercard.

The popstar siblings have both been nominated for Best International Female Solo Artist, and also face stiff competition from Christine And The Queens, Rihanna and Sia.