I need help ladies! My baby shower is the 24th and I need a long white that touches the floor that goes with the royalty…

I need help ladies! My baby shower is the 24th and I need a long white that touches the floor that goes with the royalty theme. I don't wanna spend more than 30 if i dont have to because there is a very high chance I won't wear it again. It would be a plus if there was fast shipping as well. I've looked online and can't seem to find anything I really like. Suggestions would really help......and go!