Q. Hey Oracle. This might come off very narcissistic, so don't take this the wrong way. I'm the prettiest of my friends. I dress the best, I always look the best, but somehow whenever we go out, they get all the attention from guys. I really don't understand why, and it's starting to get to my self esteem. Any idea why this happens?

There's a line between being aware of your attractiveness and vanity. You may need to look at whether you are acting in a way that is unattractive. Perhaps you are confident in your looks and therefore give off a certain vibe that men might find off-putting? If not, it could be as simple as men finding beauty daunting; they may think you are too pretty to approach in case you reject them.
Your friends may be natural and comfortable when they go out but perhaps beauty is in the eye of the beholder and your friends are just as gorgeous as you... which is why they are getting attention.
Self-esteem shouldn't come from what a guy thinks of you by the way so although you know you are good looking, why not look deeper?