I got a pair of Flip Flop ballet pumps off Vinted, for a city break where I'll be walking a lot but want to look reasonably smart (I normally schlep around in hi tops). I like them and they go with everything else I want to wear.
The only thing is, I've got one foot that's slightly bigger than the other so one shoe fits fine and the other one is too big and keeps slipping off.
I've tried insoles but they make both shoes too tight. Normally if I'm wearing DMs I just put an extra sock over the smaller foot but that'll look weird with these shoes.
Any tips? I've lost almost a third of my bodyweight over the last 4 years, and the feet size mismatch seems to have become more evident as the weight shifted.