Is wearing a lehenga to prom too fancy?

Hello! Ik this community is for weddings but I need a second opinion. 😭

I've been thinking of wearing a lehenga to prom forever and I actually decided on two designs I liked. I've shown all of my friends and they all love them and none of them are desi. They all think I should wear a lehenga if I want to. So I feel comfortable wearing one to prom but my mom thinks the ones I chose are too fancy. She says they're very wedding guest-esque but I think even the western ones I've seen are western wedding guest dress like. I think that I chose the least fancy of the ones I've seen but now I'm unsure.

Are either of these too fancy for prom?