Under 18 Girls

 1. Hou, Yifan                CHN 2623
 2. Wang, Jue                 CHN 2364
 3. Guo, Qi                   CHN 2360
 4. Ziaziulkina, Nastassia    BLR 2354
 5. Arabidze, Meri            GEO 2351
 6. Padmini, Rout             IND 2345
 7. Pustovoitova, Daria       RUS 2307
 8. Schut, Lisa               NED 2299
 9. Brunello, Marina          ITA 2267
10. Salazar, Aura Cristina    COL 2262

http://www.chess-teaching.com/world_youth_tops.php

   Chess Grandmaster Hou Yifan 

Hou Yifan (Chinese: 侯逸凡; pinyin: Hóu Yìfán (born February 27, 1994, in Xinghua, Jiangsu, China) is a Chinese chess prodigy. 

She is the reigning Women's World Chess Champion, 

the youngest ever to win the title,

 as well as the youngest female player ever to qualify for the title of Grandmaster.

At the age of 12, Hou became the youngest player ever to participate 

in the FIDE Women's World Championship (Yekaterinburg 2006) 

and the Chess Olympiad (Torino 2006). In June 2007, 

she became China's youngest National Women's Champion ever.

 She achieved the titles of Woman FIDE Master in January 2004, Woman Grandmaster in January 2007,

 she would have qualified for the International Master title in September 2008

 by reaching the final of the Women's World Championship but in August 2008 she had already qualified

 for the more prestigious Grandmaster title by achieving her 3rd GM norm.

 In 2010, she became the youngest World Chess Champion

 in history (men's or women's) by winning the Women's World Championship in Hatay,

 Turkey, at the age of 16. 

She then defended her title by defeating Indian GM Koneru Humpy in November 2011.

In the most recent (July 2012) FIDE rating list, 

Hou is ranked as the No. 1 girl player in the world, the No. 2 female player, 

 the No. 10 junior player, and the No. 3 player born in 1994 or later. 

She is only the third female chess player to achieve a FIDE rating of over 2600.