Yeah, I don't think it matters what you wear as long as it isn't distracting to others. I wear jeans or shorts with (plain, solid colored) T-shirts to the theatre all the time. It seems snobby to me to mandate a dress code. I think TDF puts it really well in their Theatre 101 page:
What do I wear?
The days when people dressed up for the theatre are sadly in the past. Off-Broadway has always been more casual than its uptown cousin, but now the Broadway dress code seems similarly relaxed. Not to discourage anyone who wants to get gussied up--you'll still see suits and ties in the audience, but you'll also see plenty of jeans and sneakers, not only at matinees but in the evening, as well. (The exception is a Broadway opening night, when an audience--most of it invited--may be asked to wear black tie.)
From
http://tdf.org/tdf_servicepage.aspx?id=103
Updated On: 7/6/09 at 12:30 AM