See Katy Perry With Her Dad Keith Hudson

Katy Perry and her dad, Keith Hudson, have probably the most contentious relationship of any pair on this list. You see, Katy's pops is a preacher by way of a hippie commune and he doesn't take kindly to his daughter's music career. He reportedly called his own flesh and blood a "devil child." Yikes.

Even though Katy has reportedly given her parents an ultimatum, she still has love for both her mom and pops, who she regularly brings to red carpet events. In the picture above, she's shown with her dad at the Billboard Women In Music Luncheon in Nov. 2012. Do devil children take their fathers to nice lunches? We didn't think so, Keith!