So, I guess I'm a bit late joining in on this thread, despite that I made news threads about her last two singles.
I love MAKE UP, the song, the PV, the cover, the promo pic. She just got so... HOT! I think that it has something to do with the fact that they were promotiong her with amoureuse, which is a gyaru brand along with using gyaru in the Style. and MAKE UP PVs. Gyaru are known for looking hot all the time. I've always thought her style was gyaru, since I first discovered her with I.
Although, to be honest, I think that I is still her best song and PV. I discovered it when it first came out, and it's been nothing but love for Kana ever since. I actually only liked the PV at first, but, like with all her songs, it really grew on me.
Oh, and I uploaded her PV to YouTube:
http://www.youtube.com/watch?v=1Nv5z-RXDBs