A girl 10-11 costume you don't want it to scary just to look decent like a pirate or charcter off of "Monster High".
I am surprised you have not thought of the obvious. Most girls in that age group will be going dressed as Hermione from Harry Potter, Lady Gaga or characters from Vampire Diaries.
Yes, it is possible. Though puberty in girls start at 11-12 , some may start at 10 years of age.
There are numerous fun games for girls aged 10 and above. Some board games to play are Clue, Monopoly, and Twilight.
Some games that are appropriate for girls online at the age of 10 years are dress up games and princess games. The Nickelodeon and Disney websites may offer some good games featuring "Dora the Explorer" and Cinderella.
Normally yes but some people think no...Yes its fine to be dating at the age of 10
at the age 10-13
Tiger Beat or J-14 or good options
There are some very easy costumes that require little work and are very easy to wear! Here are two websites with some great ideas: http://community.sparknotes.com/2009/10/09/the-easiest-halloween-costumes-ever and http://collegecandy.com/2010/10/25/the-five-easiest-halloween-costumes-ever/.
at the age of 10
10 years old
my teacher says girls get their period when they are around the age of 9 to 16
Pirates of the Carribean, Harry Potter, Twilight Vampires and Power Rangers are popular Halloween costumes for boys aged 6 to 10. Just Kids Costumes offers a great variety by age. Find it at: http://www.justkidcostumes.com/