How do I discourage my 10 year old away from platform shoes?

She wants them more than anything since she saw them online. She wants the high top boot kind like club kids wear. She believes she will be able to walk in them just fine. If I could find a cheap pair I would let her try them just to see how impossible and painful they are. Where does she think she would wear them? I asked her this and she said the lake. Huh? Maybe this is just one of those situation where she has to hear the word no and live with it.