Mamasource's Daily Deal Today is a year of Discovery Girls Magazine for only $16. I got this for my 10-year-old earlier this year and she loves it! Devours every single issue as soon as it comes in. It's the most appropriate magazine that I have found so far for her age. It's billed as being "pre-teen." I think depending on the girl it could be anywhere from 8 to 13.

http://www.sunshinerewards.com/shopping/Mamapedia/