No. Compare the clothing, the music... It's all very similar. I'm not saying it's a bad thing - you need to know how to boost your popularity in the business, and one way of doing that is to draw influences from other successful artists at the moment. Madonna was surely the first female singer to introduce such a brash look, so Christina has obviously been influenced by her as well. But she's also inspired by Lady's style, at least I see it that way.