Petite girl with big booty started doing squats, underwear getting looser?

[Anonymous]

So I've always had a big bum for a girl my size, and I recently just incorporated a heavy squat routine with circuit weight training and a bit of cardio. But I realised most of my underwear are now very loose or they sit lower and often my jeans tend to pull them down my crack..
I have a firm butt now but does that mean that my ass has gotten smaller since my underwear don't fit anymore?
It's weird I thought squats are supposed to make my bum bigger haha

Updates

+1 y

I'm 164cm (5"4) and weigh 46 kg

[AdamThomas]

Your bum was mostly fat, and you've burned it off with the exercise. Squats will make your bum bigger but it will be muscle instead, and muscle takes longer to build.

[xXiTacoXx]

Your ass is getting smaller along with more toned, and when that happens you need to shrink down in pants and underwear size.

[Tiger288]

Really? U have big butt? No way.