Holiday Party in 4 Days and I'm Cluless!

HELP!!

My company's holiday party is in four days, I don't really have anything nice to wear nor do I have a clue on how to style my hair. I'm known as a tomboy at work and I want to amaze everyone at the party! But, have yet know where to start.

My biggest problem is that I have a pear shape body, many of the dresses I have tried are either very loose at the top or very tight at the thigh and buttocks area. I am about 5 foot 4, around 120lbs and have an olive complexion. As for my hair I have sort of the frizzy and straight type of texture and the length is right above my shoulders, I tried to straighten it but ended up looking funny it looks crispy straight and not soft.

Is there a fairy godmother that can help this disaster?