French phrase
Avez-vous une taille plus ~ ?
Meaning
Do you have a slightly ___ size?
When to use it
A gentle request for a slightly different size. It sounds polite and mildly tentative.
Example dialogue
Je voudrais essayer cette robe.
I'd like to try on this dress.
Avez-vous une taille plus petite ?
Do you have a slightly smaller size?