THE X-Factor’s youngest ever winner, Louisa Johnson, has been named as a special guest support for Little Mix’s sold-out concert at Caldicot Castle this summer.

The 19-year-old will be joined by Australian band, Sheppard, who recently supported Justin Bieber at his show in Perth, Australia.

Since her 2015 X Factor win, Louisa Johnson has enjoyed chart hits with Forever Young, and So Good and featured on the Clean Bandit top five single, Tears.

This announcement comes a couple of weeks after Caldicot Castle has re-opened for the summer season with a brand new remodelled café, a new children’s play area and a series of events.