I don't know about you, but I have a real obsession with messy buns. Actually, my hairdresser recently sort of ruined my hair, so I BECAME obsessed with different hairstyles to overcome that problem.
And I have to say, even though it seems super easy, it's one of the most difficult hairstyles to deal with. I have tried a lot of different ways to do nice buns, but they are always either too messy or too neat, either too loose or too tight and it makes me go nuts! Until I finally found a really quick and easy way to do it. So now I can walk around in town and show of my awesome hairstyle yay :-)
Of course, if you want to, you can make it tighter so that it's more classy, depends on the occasion and the mood! Here's an example of how a tighter bun looks like. For more buns and top-knots inspirations, I go to this really great
tumblr.