Re: OOC: Before the Battle Jaina isn't a fancy dress person but she does clean up well when she tries. She came with Cassian since he's the only person from home that's here. She was friendly to anyone who talked to her, she'd dance if anyone asked and enjoyed the food and drinks.
Yelena will smack you with her purse if you diss the dress. She would have stuck close to Natasha, said hello to the people she'd met, especially Tonks since they sort of bonded while dragon watching. Definitely sampled the drinks, might have danced, might not have, it depends on her mood.