It depends on what you like and your opinion. But on halloween, I see a lot of 10 year old girls dress up as Witches, Princesses, Vampires, Barbies, Pirates, Super Heros, Nerds, Angels, Devils, Gothic People, Jail People, etc.
Some good costumes for 10 year old girls are:
you can get some panty hose rip it up a little bit add a skirt get an undershirt then a thin top rip it up and you got a costume
Kids seem to really like pirate costumes or goddess and gods
cheerleader, Dorthy, car hop 50s costume,cat (or any animal),witch,wolf man or girl ,hulk any super hero
It'm amazing how simple a good costume can be to make! Look at http://familyfun.go.com/halloween/halloween-kids-costumes/ for some good ideas. Happy Halloween
There are many great scary costumes for women! Bride of frankenstein, witch, or even a zombie are some ideas. Here, this website sells some spooky costumes for woman: http://www.frightcatalog.com/Halloween-Costumes/Womens-Costumes/Horror-Costumes/
There are several online stores that sell a wide variety of Halloween costumes. Some of the most popular sites are buycostumes.com, costumesupercenter.com and anytimecostumes.com all these has a great selection for kids and adults.
Some excellent ideas for couple Halloween costumes include past presidents like Hillary and Bill or Bonnie and Clyde. You can get costumes at Party City or even stores like Target.
Some good ideas for costumes for couples include Marge and Homer Simpson and Lucy and Ricky. They make for great costumes!
Some good homemade halloween costumes could be for one the original witch or even a pumpkin. Easy, fast, and fun! You could also do frankenstein and the bride for couples.
There are some good websites that have ideas for couples costumes. Sexycostumes.com has some choices for different sexy sailor costumes, plus many other ideas.
There are many places to get costumes for a fun tim with the family. Some places are shop.ebay.com/i.html?_nkw=family+halloween+costumes and familyfun.go.com/halloween/halloween-kids-costumes
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/.
There are many popular costumes worn for Halloween such as a witch costume. Boys costumes include super heroes and vampires.
Ebay and WWE shop mite be good.
Some of the best coupons for Halloween costumes are ones that allow you to purchase different parts of a costume for the price of one part of a costume. Party City provides some of these coupons for their Halloween costumes.