Mass retailer or one of a kind?

I saw this Old Navy dress in a commercial and I thought it was cute. I was in the vicinity of Old Navy this weekend so I went to take a look around and saw the dress "in person." I tried it on and loved the fit, the colors are more vivid and I enjoy the fact that it is long (longer than in the photo.) My mom said that it was "so me" but I am concerned that because it's so mass produced that I am going to see it all over the place. (And the fact that it is in the commercial doesn't help me.) I don't want to see myself coming and going all over the place, I can normally spot an item that someone is wearing from a major retailer. Do you have a problem with buying a distinctive item that is sold everywhere?