What age group is this costume for?
Preschool and Younger
Elementary School
Middle School

Estimated time required to make this costume:
It really depends.

Difficulty level:
Quick and easy - no sewing required

Items you will need: (Hit your return key to start a new line)
White short sleeved blouse
Checkered school skirt
Black tie
Sleeveless black or navy blue v necked jumper
Posh black sunglasses (not expensive)
White socks
Black hand bag
Black smart shoes
Elastic band for hair
Black watch
Blonde hair dye (optional)
Bar of soap in a plastic case
A white napkin
White tissues

Instructions:
Dye hair blonde if you want.
Put on blouse and skirt. Tuck skirt in. Button to the top. Put on tie, put on jumper.
Put socks on and pull them up.
Tie hair in a neat ponytail. Pt on watch. Put soap, napkins and tissues in the bag.
Put on shoes.
Put sunglasses on head like head band.

Other information to consider:
She is very hygenic and doesn't touch anything without using the napkin. Consider this when getting your sweets, act really posh and grown up.