How can I make about $100 or $200 in 5 days?

I have my 8th grade promotion on May 12th and I'm going dress shopping this weekend. I want to know how I can make money so I can have the prettiest dress and be the prettiest one there(: My parents will pay for probably most of it, but tey wont pay for it if it's like $500, that's why I want to know(: thanks alot!!! I love you!(: