Should I feel awkward changing my style of clothing?

Ok, first off I'm a college male. I've pretty much always dressed like a dirtbag, wearing a lot of the same beat up clothes daily and often not washing them. So recently I decided out of nowhere to start dressing better because I finally consciously realized that that way I've been dressing is unacceptable and I realized dressing better would give people I've never met a better impression of me. Problem is that I'm socially awkward and I feel weird suddenly changing the way I dress, like people would think there is something wrong w/ me or something. Any thoughts on this? Is going from wearing old beat up clothes to Hollister, AE, etc weird to people? Thanks in advance.