You could visit some websites like
http://www.girlsense.com fashion games and shopping
http://www.moshimonsters.com cute monsters you can shop and play games with
http://www.Disney.go.com lots of different activities
http://www.poptropica.com world of mysteries and fun
Those are some fun websites, I am ten years old and enjoy all of those websites.
stardoll.com
yes you have weeworld meez and zwinky and imvu
have sex
AGAME.com
www.mandm.webs.com!
There is a large variety of websites that are fun and suitable for five-year-old girls - however I can only name a few:- (See related Links)
tv.disney.godisneychannelwebkinzmillsberrypostopiamyscene.everythinggirlbratz
Some fun websites for 12-year-old girls may include GirlsGoGames.com for various games, Miss O and Friends for girl-focused content, and PopJam for a safe social media experience. These sites offer entertainment and activities suitable for preteens.
meez is a fun website for both boys and girls
gamesgames.com,Justice.com,and toysrus.com
run around playing football
I think a good game for 11 year old girls are ggg.com