A person can get ideas for a dog costume from several different places. Some of these include BuzzFeed, Good Housekeeping, Chill Out Point, and Reader's Digest.
Costume ideas can be found at Costume Supercenter or Anytime Costumes. Alternatively, one could search Google Images for the theme that one wished to dress as for inspiration.
There are many online shops that sell dog costume. I suggest idea to amazon.com. Amazon.com is one of online shop that sells dog costume with any kind of models. You can visit www.amazon.com
One could be Dorothy from The Wizard of Oz and the other could be the Scarecrow, Tin Man or Cowardly Lion. The dog, of course, would be Dorothy's dog, Toto.
a dog in a costume whats so hard about that
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 buy one. It is probably to hard to make one yourself.
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.