I don't think any of them are hot! I would say that they are beautiful and attractive but not hot!
I don't think Paige looks like an Alien, but she is pale. But I don't think that's a bad thing! It makes her look pretty in my eyes! I think that Phoebe at times was a bit slutty. I think that Piper was quite beautiful. I think that Prue was good-looking. I didn't particularly like the character Billie and I think that Kaley should have changed her hair colour, it really didn't suit her. She should have stuck with the hair colour she had on 8 Simple Rules.
I'm sorry if I insulted anyone (which seems to be a regular on this thread!)