You might want to get a plain white, floor length,sleeveless dress that has a low V-neck or halter Greek styled. You also want to get a gold rope and tie it around your waist. Also you could get some armbands.Since Athena is the goddess of battle strategy you can get a Greek helmet, sword, and shield all painted bronze. Also Athena is the goddess of wisdom so you could get some books instead of the armor and weapon.
(a way too expensive example of gown) http://www.aliexpress.com/product-fm/438590661-Online-New-Arrival-Greek-Style-Empire-White-Sleeveless-Beaded-Floor-Length-Chiffon-Evening-Dress-Night-Dress-wholesalers.html
Halloween Costume Ideas for Men Women and Kids. Pumpkin carving tips, Safety tips, Sexy couples Ideas, Halloween Foods http://halloween-costume-ideas-2013.blogspot.com/
Costume ideas that begin with the letter i:Incredible HulkIndianIndiana JonesInmate
http://www.halloween.com/halloween-costume-quick-ideas.php
You can get good 80's costume ideas on the following site: http://liketotally80s.com/80s-party-idea.html. They have great ideas!
a monkey
You can get some creative costume ideas at http://costumeideazone.com/. You can also get some ideas at http://www.indigo.org/halloween/page2.html
If you want costume ideas then the best place for that would be online on some Halloween websites. You can also just go to a website that has Audrey Hepburn costume ideas on their as well.
well its a bit obvious! Angel and devil are good or if not then look on the internet for costume ideas or look in costume shops
Family Fun Magazine offers some great Halloween costume ideas. They offer individual costume ideas or ideas you can use for the whole family! http://familyfun.go.com/crafts/ducks-662521/
There are many peacock costume ideas for children. peacockcostume.com/ and www.coolest-homemade-costumes.com or www.ebay.com/sch/i.html?_nkw=peacock+costume
Jelly
Captain Hook, Charlie Chaplin, cheerleader, chef and cowboy are costume ideas. Additional costume ideas include cop, convict, clown, circus ringmaster and chimney sweeper.