Pink and Tulisa Contostavlos have been confirmed as the special guest performers on next weekend's X Factor semi-final.

The US singer will be performing her new single Try from her new album The Truth About Love on next Sunday’s results show.

Meanwhile, Tulisa will be taking to the stage herself to sing her new song from her debut solo album The Female Boss.

The X-Factor judge was originally due to perform this weekend, but delayed her performance to coincide with the release of her album.

The semi-final starts on Saturday, December 1 at 8pm on UTV and TV3.