Hot weather is a particular challenge for trans people whether the that be wigs, binders, padding or forms. Or, seeing far too many pictures of tell tale tan lines on arms. My normal outfit normally starts with a lot of industrial shape-wear to hold, tuck and pad even for a modest outfit. Though when the temperature creeps into the upper 20s it's time for a rethink and to realise that most people are going to be resembling a very sweaty Betty.
