GaGa. Love her singing voice, loathe her speaking voice. She never used to talk like that till she became 'Lady GaGa.'

I also hate how Nicki uses a girly voice sometimes. Kinda weird. Everything about Katy irks me. Taylor always sounds so fake surprised all the time.

I only like Rihanna's, Beyonce's and Christina's speaking voice. They are natural and not presumptuous.