Wardrobe dilemma

I have, as I'm sure a lot of men do, a selection of shirts that are what I shall call 'high-rotation' shirts. And I don't mean that they're spinny. Ho ho, no... that's silly. No, I have a basic set of shirts that I wear each week. One of my faves got ripped a few weeks ago so I'm on about six frequently worn shirts. Becuase my work is fairly sedentary, and because I always wear a T-shirt under a shirt, I can sometimes get away with ironing a shirt and wearing it again the following week before I put it in the pile to be washed come the weekend. Now, C has Wednesdays off and, I don't know, must have felt some urge to do a load of washing this week, so last night, as I watched the very talented Hugh Laurie pretending to limp, I was folding shirts I had worn in the first part of this week. So my dilemma is this: Is it OK to wear the same shirt twice in one week, even if it has been washed?