Kelly doesn’t seem to worry when others comment on her weight gain. She prefers it that way, to be a good role model sending a message you don’t have to be really skinny, and that you’re fine just the way you are. In response to the fan reaction of her weight gain when she performed at KISS.FM Wango Tango:

But Kelly’s always favored a piece of cheesecake over perfection. “I’ve always been thicker,” she’s said. “I don’t believe in dieting.”

And even now, says a friend, “She’s happy where she’s at. She doesn’t think being thin should be a big priority in her life.”

Plus, she wants to continue to be a good role model for her more voluptuous fans. “She gets tons of fan letters telling her to stay curvy,” the source says. “The last thing she wants to do is betray those young women who look up to her by going on a crash diet.”

- Source

It’s not the first time she’s heard of it either. Sometimes it’s not about her weight. She already knows what to do, and she knows that she’s not going to change who she is – unless its for her benefit.

…she admits that it does hurt. “I mean, I’m a person, so obviously it hurts you at some point on some level — but I think I’ve been this girl since I was on ‘Idol.’ I’m the same person,” she said. “I ain’t gonna change. It’s apples and oranges. Some people like it, some people don’t.”

- Source

Well we like you Kelly just the way you are, you still continue to rock out loud!