Hair growth!

A couple of years ago I chopped off all of my hair. I mean all of it (pictures included). I'm trying to grow it out as much as possible before prom this year and was wondering if anyone had any suggestions on what would work. I've been growing it the entire 2 years and it's significantly longer but no where near where I want it🙁🙁🙁 The now picture is also my prom dress haha it's the only one I have that really shows the actual length due to me always fixing my hair😆😆😆