HAIRspiration

I NEED YOUR HELP! I'm itching to get a hair cut; as you can see here, here, and here, my hair has grown almost down to my hips, and the tips are looking a bit outdated. Of course, it's also a sign to get a haircut when my mom has mentioned something about the length of my hair the past three times that I have seen her.
What do you think of me going a medium length? I don't ever remember having my hair that short, as well, there's something about the tousled, wavy look that is so effortlessly chic, and goes so great with that length hair...I need to have it! Especially with the new year, I want a NEW LOOK! Thoughts? Ideas? Drop a comment! And Merry Christmas EVE!