Yeah, there are differences in their Pop kinds. Everyone of them is unique in her way. Think about a collaboration... I think this photo of Gaga is one of the most beautiful ones... :D
love this... kinda true. For me, this is the definition: Kylie = a Goddess pop. Katy = a Candy "cute" pop. Britney = the eternal princess of pop. Madonna = the QUEEN forever (obvious). GaGa = the Substance of pop, pure essence. ;-*