What's wrong with my body shape?

Anonymous
Strange question but I've always wondered. So I'm a young female who would probably be considered an hourglass figure because my hips and bust are much wider than my waist. I've lost weight recently and was looking at my reflection. I noticed my spine curves in a lot. So one would think my butt is big but it's actually really flat... because my butt crack doesn't start where my back curves out. It just goes flat where my butt should be! People say I have a big butt, however it's more wide than it is big. From a profile view, you can tell my spine is very arched but my butt is completely flat. Why is this? And can I fix it by doing exercises? It seems not because it's like my bones are structured this way. Please give me advice, I'm so curious lol!
What's wrong with my body shape?
3 Opinion