Source:
http://beauty.oricon.co.jp/news/56624/full/
When you hear 'summer beauty', who do you think of?
Overall ranking:
1. Ebihara Yuri
2. Hamasaki Ayumi
3. Koda Kumi
4. Yamada Yuu
5. Asao Miwa
6. Ohguro Maki
7. aiko
8. Watanabe Misato
9. Otsuka Ai
10. Matsuura Aya
10. Wakatsuki Chinatsu
On the oricon page, it also separates the ranking by females who vote and males who vote, so you can look at the difference between the preferences of both genders. For example, Ai Otsuka doesn't get voted in by females while she ranks 7th when voted by males.