This subject has come up many times before, as apparently people still think it's acceptable to show up for a night a theater in rags.
I'll make it easy for you with a re-cap:
WHAT NOT TO WEAR:
Manpris (is it so hard to choose between shorts and pants? Be a man and dis the 'pri!)
Shorts (to the beach, yes. to the Theater, NO. I don't care how hot it it or how good you think you look in those daisy dukes.)
Sweatpants (The fact that I even have to mention these is sad)
Birkenstock sandals (Never ok, believe it or not, no one wants to see your feet! PS. wearing with socks may get you shot)
Flip flops (with anything -put a damn shoe on already!)
T-shirts with more than one hole in them (trendy "hole" or not, trendy "saying" or not, Trendy "smell" or not)
Pajamas (No Spongebob, No "I <3 Brad", not even the "silky" kind)
Jeans you generally wear to wash your car, dog, carpets, etc
Athletic shoes/sneakers that have survived car accidents, beach wearings, fires, 15 days lost in the Canyon, animal chewings, mud wrestling, etc.
Baseball caps (it's not sunny INSIDE the theater and believe me, no one in the theater cares what team you like)
This leaves you a lot of choice:
Nice jeans, khaki pants, skirts, dresses
Nice T-shirt, a button down shirt, a silky shirt, sweaters Sandals, athletic shoes, work shoes (except if your work shoes are used in your septic tank cleaning job), mules, boots
I hope this helps.
"My dreams, watching me said, one to the other...this life has let us down."