http://www.lovebscott.com/news/wendy-williams-speaks-called-transgender-stronger-woman-video
Proof that even gorgeous cis-women get teased about possibly being trans.
And yes, it does happen a lot to just about any girl who's tall. At the casino I used to work at, the table full of guys got into a bit of a laughing session about the possibility that the gorgeous 5'11" waitress was trans, presumably just because she was tall and had athletic tomboyish features.