The singer will be performing on the Sunday in the "legend" slot.
After appearing on the TV show, Jade MayJean wished she had been better prepared for life afterwards.
Twin sisters Sophie and Lauren Cripps sang Kylie's hit Dancing to their mother before she died.
The pop star will top the bill at this year's festival in August, organisers have announced.
They called Kylie an "LGBTQ icon".
She tweeted: "BRIGHTON! It’s happening! Can’t wait to celebrate #Pride with you all on August 3rd".
Other acts announced for this year's event include Grace Jones and Jessie J and Clean Bandit.
Last year's festival was headlined by Britney Spears.