hello i am new to this post!!!!
i think that they all look like normal people without makeup, and in some cases they look better without also.
in britneys case, i think that she doesnt take care of her higenie and even her personal clean. she looks dirty most of the times. before kevin(here is when i started to find her like a dirty person in pics) she looked great most of the time even when she was not with make up.
i dont know her personaly but form the pics before and now you can see a diference in her looks.
its just my opinion