Uvs are getting stretched and messed when I use subdivision modifier

[Aayush_Patel]

When I take of the subdivision modifier, it looks good, but when I add it, it gets all stretched. I cant add loop cuts because that will mess up the shape of my model. I’m new to blender, and I dont know what to do.

[RSEhlers]

Make sure you have applied scale!
Also, try this when you Un-Wrap.