Is it normal that big asses get more sweaty?

So I'm a girl. Still young.

So I am blonde slender but with a some what big ass. Which i obviously show off in a thong or g string every night.But I play sports often and although I don't suffer from excess sweat or anything, after in the changing rooms when I take of my shorts,my ass feels sweaty and smelly. And the g string I wore looks like I wore it for 24 hours straight without showering.

Somehow my boyfriend finds this attractive but I don't know if its normal or not. Plz give me answers