The best girl site that I personally would recamend is www.beinggirl.ca It has answers and polls to all teen girl questions, as well as fun games and quizes too!
Enjoy
clubpenguin.com agame.com Pretty Much any website has an option for 'Girl' games, or different sections: Ex. Makeup, Hairstyling, Design...Dress up.
you ask around
Tweens are 10,11, and 12
American Girl Girl's Life Seventeen
Some suggestions for presents for a tween girl are: something that is related to a hobby or special interest, clothing, a gift card for her favorite store or restaurant, and money.
Well here are some I know girlsense.com weeworld.com fantage.com teensgirlgames.com
long long hair of course
girlsgogames.com I LOVE THAT WEBSITE
The best technology device for your tween depends on what kind of device. if you would like to get your tween is a boy and wants a portable device get him a 3DS, for younger kids. or you could get a psp, for older kids. if your tween is a girl then get her a phone and she will love you for ever, if she already has a phone then get her a ipod or ipad, which will work for any age. if you would want to get a non-portable device then get a boy a xbox360 and a girl a wii. or if you have 2 tween get a wii so the whole family can have fun at the same time.
neopets.com webkinz.com dizzyworld pokemon.com for 13 and up weeworld facebook and myspace
I think a tween should be a devil, angel, witch, cow girl, pirate, the possibilities are endless! Go to Costume Express.com they have a ton of tween choices. Overall, a tween wants a costume that isn't little kidish and a more mature and grown up since they are becoming a teenager. Talk to your tween to see what they have in mind, because I'm sure they know what type of costume they prefer.
Yes! A tween is a boy/girl ages 10-12. There is also a tweenager category :) of course, it is called tween from "between". Between a kid and a teen so its tween. Once you turn 13, then your a teenager. And, trust me! lol, im 13 and being a teenager can really STINK sometimes :D