So I'm going on a date this week and its actually...my first date ever. I need some advice on what to wear.

He asked me out last Wednesday, because he received two tickets to the Donny and Marie show at the Pantages theater. We actually met at the beginning of November at a wedding, we share a lot of friends, since he lived down here last year for college. We talked the whole night and there was a total connection between us, and after he dropped me off at my house (he dropped all of my friends off) he told our friend Anka* that he liked me and wanted my number. Since then, we've texted and I've invited him to events in my area that our friends and I were going to, and we've been able to spend some time together. I pretty much thought he would never ask me out, because he is preparing for a 2-year church mission, but he asked me to go to the concert last Wednesday...just me...as in we wouldn't be with our buffer group of friends.  Cue the panic and happiness.

I know that this isn't heading toward a steady relationship, I'm not emotionally prepared or ready for a relationship and he is leaving in a couple months and is focused on his mission, not girls.

So, what exactly does this have to do with an outfit? I have no clue what to wear a) because of the venue b) to show that I like him and c) I'm not trying to get into a relationship. Also keep in mind it's in the evening in LA, so it gets pretty cool at night.

Do any of you wonderful girls have some advice for a girl on her first date?