Thanks to everyone for your responses, and sorry I haven't replied until now. There were some really good suggestions. But it was really busy beforehand (I should have mentioned that I had a pile of kids over at our place for a birthday sleepover the day before we left, and we were still doing games and skits at midnight!) so I had no time to shop for anything cool like a silk scarf, ribbon, or sparkly beanie (I don't already own any of these things -- not even a scarf!). Then when we got to L.A. I just wanted to hang out with friends and didn't feel like shopping at all.
In the end it didn't matter. I figured out a way to style the hair that looked pretty cute, put on my makeup, some sparkly chandelier earrings and my prettiest stiletto heels and then stopped thinking about it, because the experience itself was amazing and kind of trippy. I am very grateful. We were in the Dolby theatre (where they do the Oscars) with all the cast and crew, and super close -- six rows from the front! The cast all went up on stage and they were only about fifty feet away. George Lucas and Steven Spielberg were behind us. We were sitting right beside Dennis Muren, who I think has the most Academy awards next to Walk Disney and is basically a visual effects legend, so we got to chat with him for a bit. It was so weird. And afterwards I saw famous people all over the place. When I went to use the restrooms, the main actress, Daisy Ridley (whose name you don't know now, but by next week, the whole world will know her) was in there. I even talked (or, more likely, gushed) briefly to Mark Hamill (Luke Skywalker), fangirl that I am.
(It didn't even matter what I wore, because L.A. was freezing that night and the afterparty was actually outside, in these undercover tent-tunnel things -- they blocked off four blocks of Hollywood Boulevard -- so I kept my jacket on the whole time! I could have worn jeans and an old tee shirt, and no one would have noticed).
No spoilers for the movie, of course.
