Simon Cowell: 'Demi Lovato is irritating'
Simon Cowell joked Demi Lovato was ''obnoxious'' and ''irritating'' in a pre-recorded video speech at the Teen Choice Awards last night.
Demi Lovato claims Simon Cowell is so vain ''he wears his sunglasses in doors'' and she finds it hilarious how obsessed he is with his appearance.