Pick it up on facebook! She'll be on the grooms or his wife's friends list!

Send her a message saying

"Hey X, I was a little shattered when we met the other day, shame i didn't get a dance with you! How about we pick up our conversation without the bridesmaid dress sometime? xxx"

Thats said there are plenty of girls around so you shouldn't focus on 1 bad interaction! Get out there, meet more, talk to more and embarrass yourself in front of them. I have some really good nights out where I'm kiss and number closing all over the place. I also have nights out where I suck and offend girls with accidental racist comments (which i didnt even mean) or drop my drink over them. All I'm sating is dont read into it too much but remedy it next time!