Eww! Amy wears tights, on a ‘date’. Well, that’s unlucky Rex out of luck again.
However, in discussion with an Esteemed Local Poster, it was pointed out that Knickers Were Not Mentioned. So either, and even more ewww, Amy wears tights but no knickers (and a midwife of all people really should have an appreciation of the value of a Stout Cotton Gusset) or we are meant to think they did and they didn’t.