What Do I Wear To My 8th Grade Prom?!?

Hey guys, plz help me! its thursday and my 8th grade formal is next friday(not tomorrow lol) and i need to find a dress to wear,......but I`m new to the whole dress thing, its been mostly jeans for me lol , so plz help me, i don`t want to end up choosing something ugly, and i dont trust my judgment if u know what i mean, so i`m about 4`11" with short dirty blonde hair and im kinda pale, if u know what i shld wear, plz let me know, i just wanna wear something beautiful..... Oh yea, and money is kinda tight for me btw.... THNX!!!!