The 25-year-old star revealed to her Twitter fans that she is excited and nervous to be taking part.
She said: 'Filming the Piers Morgan special 4 itv and i could not be more nerves and more excited at the same time i feel so honored that he picked me!'
Kelly's mum Sharon gave one of the first interviews to Morgan, 45, for the ITV series and other stars that have taken part include their arch rival Dannii Minogue as well as music boss Simon Cowell.
X Factor beauty Cheryl Cole is the next star to talk to Morgan about her life.