do these dior pumps run TTS

im just after getting a new pair of Dior pumps and i got 37.5 when usually i get 38 or 38.5 ( Dior sandals ) :confused1: so i guess you have to always try the Diors on before u buy! ( unless u dont care if theyre a tad too small or too big because you want them SOOO much and u will wear them anyway:nuts: - just like i do hihi )