This stuff comes up every year, seriously...
I don't think she's had collagen. I'm not saying she never will, but her lips keep going back and forth between OMFG HUGE and perfectly normal (usually depending on how candid the pic/video is). It's not consistent enough to be a long-lasting procedure.
It's very likely due to lip plumper (plus loads of Photoshop in still pictures). I don't like the look--especially that poofy pout. It looks too forced. Hopefully the trend will pass and Ayu will look normal even in magazine shoots again.
Oh, and you know what? I would probably have a big problem with Ayu getting surgery, or even a "light" procedure like collagen or botox (no, I don't feel the same way about getting teeth fixed). But it is Ayu's body, and Ayu's self, and she can do what she wants in that sense. I'm not going to judge her character for it. She'll always be my inspirational Ayu.
Oh, and one more thing! Ayu is one of those people whose facial features can look drastically different depending on makeup and lighting. Like, UNBELIEVABLY different. I don't mean necessarily her lips, but her cheekbones, nose, and facial shape as a whole. Some people like to think that every little change must be due to plastic surgery...and they ignore the (admittedly rare) normal, light-makeup pics throughout the years that indicate otherwise.
