They’d look something like this, only with a real model, a real hairdresser, a real photographer, a real graphic designer, perhaps a makeup artist, and some mention of a brand.
I wouldn’t be at all surprised if somebody else had already done this. I didn’t search, because I wanted to do it anyway. I had planned to wear a red bra over the top of the Superman T-shirt, but I forgot about it until a few hours after I posted this. Oh well; I remember Supergirl puts a bra on over the top of her clothes at one point in the movie, so it wouldn’t be so original for me to do it. Also, it probably would have looked terrible.
Completely unrelated, but important: don’t forget to watch the last ever space shuttle launch on NASA TV if you aren’t able to hold your breath for 20 minutes and fly alongside it, or can’t get to Florida in time.