Me and my best friend

if your friendship could have lasted this long and she said that she likes you, then that means that she likes the guy who youve been being and I'm hoping that's you being yourself. but she obviously likes that person and you should absolutely be that guy.

Just do what you do best: BEING YOURSELF. Obviously if you two have been such good friends and talk about everything, and she admits to having a crush on you too, you're doing something right! In short, don't change a thing, and just keep being the great guy you are to her! =D

dont change anything

if you too have been friends and talk all the time you guys are probably really good together the only thing that would make it awkward is if you changed so just be with yourself

As the girls have already advised, just be yourself.

However, to ensure she feels like more than a friend (and to reflect your change from friendship status), try holding her hand while you walk around the mall together.
It might not seem like much, but it's a definite way to symbolically portray that the two of you are now closer than you were before.

:)