I'll know you if I see you in the street TY. How low do you go
?
A "bob" is customary when greeting an acquaintance. Copy female characters in Austen or Gaskell dramas. Demelza realised she'd been transformed into gentry on marrying Ross Poldark when a village girl of her own age curtsied to her; it was a bob-style curtsey in the tv series.
A Theresa May low curtsey is not required, not even when meeting HM, and certainly not when wearing a short or slim-fitting skirt, or high heels.

I'll teem my crinoline with a wide-brimmed bonnet. I might carry a parasol (umbrella) + a fan; either may come in useful to bat someone away.