My fashion 911

I am on the verge of panicking as my graduation draws near. The coordinator says we just have to be in our best Sunday dress and it is up to us whether we want to take it a notch higher. From the pictures I saw in the past for the course’s graduation, I could say that attendees took it way notches higher. I do not want to break my bank just to get in the best outfit but I need to present myself in a manner that I would not look like an outcast.