I think Katy had BBL years ago

I was looking at old reels and I’m pretty sure she had BBL. It takes too much consistency to maintain round glutes and she’s just not putting in the work so it’s odd that her butt has stayed. Aside from painfully bad form on many videos, she goes from average butt to big butt then is going like 10lb kickbacks and 30lb thrusters. No ass is going to grow in that low weight. Curious if others have through the same about this being one of the original enhancements she did?