What to do for senior portrait?

[Intoxicated Brutality]

Kinda short notice, but if I don't get replies in time oh well.
So basically, I'm just looking for some opinions.

Today I go to get my senior portrait done (just the one that'll be in the yearbook). if I get suggestions within the next hour and a half, it'll help with that one. But I could also use suggestions for when I go get the rest of my pictures done(ones my parents will likely buy prints of).

I have essentially no idea what to do with my hair. It's naturally pretty curly(not ringlets; closer to just being really wavy I suppose) so frizz gets to be a problem if I don't do anything to it. It's also gotten really long, down to about the bottom of my ribcage when straightened.

Any suggestions for pretty basic but nice looking styling I can do would be much appreciated.

And I don't particularly want to for no reason, but if it'd help to see a picture of my hair normally, I can hunt one down to post I suppose.

Thanks! (: