TV or TS

[Daveydeelookatme]

OK I don't want to offend any one so excuse if this sounds a bit clumsy, whats the difference between TV and TS on this site? some of the girls advertising as TV seem to be fully female and some are living both as men and women. The only distinction seems to be whether a girl has had a boob job? Would like to hear from any of the women who this relates to if it's not an ignorant question, sorry in advance if it is.