Can you design an inexpensive outfit for a semi-formal party?

I am 21, 5'4, size 16. I have very short hair (longer in the front). What can you do for me?

Can you design an inexpensive outfit for a semi-formal party?

outfit 1- http://www.polyvore.com/cgi/set?id=48674... (the skirt is very expensive but it's a common design for skirts in black so I'm sure you can find a skirt just like this one for $20.)

outfit 2- http://www.polyvore.com/cgi/set?id=48679...