Her upper lip looks a lot plumper than it used to be, no doubt about that, one of her fan's has to say this in a forum:
"Some big lips can look sexy but not hers. Her top lip looks all ducky and retarded... "
It was even published in a magazine that she had a lips aug. done. Here are some pics for you ppl to compare.
of course the lips are plump, esp. the upper lip
a creative pic which joins her before and after pics