The pitch might be higher than men's voices but it somehow sounds odd.Too Feminine: Look at the way she uses make up, the way she walks and moves her arms or hands, especially over-enthusiastic hair flicking - as if she is walking on a constant catwalk.

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21 contestants from 15 countries compete for the ultimate prize - to be crowned the most beautiful ladyboy in the world.To reduce that risk, we've drawn up a simple guide of things to look out for.