I absolutely love these sandals. They are so cute and comfortable. I am a true 7,5 shoe size and I chose the 8. I ordered both the 7 and 8 and concluded that the 8 has a better fit. A 7,5 can definitely get away with the 7, if you don't mind the toes hanging over the sandal a bit. Otherwise definitely shoot for the 8. I began wearing them the very next day I got them!