Rosie the Riverter


All you need is a dark blue dress or jean shirt and a orange or red polka dot scarf.
Cowgirl or cowboy

Mary Poppins and Bert

You can always substitute a broom for the chimney sweeper.
Sherlock Holmes

Okay only try this one if you have a cape, a fake pipe you can buy at a toy store.
Waldo from Where's Waldo
The Eleventh Doctor Who and Amy Pond

You can get a sonic screwdriver at ThinkGeek.com
Superman

I hope these help.