One who dresses fashionably.
In the same way that a male transvestite poses as a woman, so does the trendvestite pose as someone cool and trendy.
Also used in relation to a male who dresses in such a metrosexual style that he is almost wearing female clothing.
See definitions for emo
-Is that a guy wearing girl's clothes... or a mannish girl??
-I think It' a trendvestite.
All the kids are following the latest fad for "emo" hair and skinny jeans... I can't determine the gender of all these trendvestites.