Would it be possible?

To have a combination of head shapes? I've got a square jaw (which I absolutely hate!), but a circular hairline. IMO, I don't think square faces look nice on females, it makes us look manly and we don't have many cute hairstyles to choose from. I think straight bangs and hair looks so cute! but i have to avoid it because the cuts are too blunt, so i can't do it without looking like a tranny..:'( it's SO depressing! It also gives the illusion that we've got huge heads! And flat chins -__-' I've got relaxed hair, it's shoulder length, but I don't think there is much that can be done to hide my face shape. Is there a surgery that can change it?