I frickin hate this, can someone help me understand ??

My mother hates it when I wear leggings and my father sides with her. They are so comfy AND they look great on me though. And before you say anything, no they aren’t revealing in any way, the thing my parents are concerned about is my butt 🙄🙄🙄 I’m required to wear a shirt that cover my butt (which looks horrible because I do have one, however small). So this morning I wear a shirt that does just that, and they’re just like no. So frustrating, ESPECIALLY when I wore this outfit just a week or two ago. Think my mom ways sick at the time, so just my dad in the morning (shows how much he actually cares). But this is getting so frustrating, like, I know how to take care of myself. Come look and see the other girls at school and see if the boys/adults are still going to prey on me. So tired of this. Can someone help me understand their viewpoint??