"I could have danced all night..."

I just remembered part of my dream last night. I was wearing a suit-thing and had different hair, like all slicked back or something. I was dancing with another girl. There was a brief confusion about who should be the "boy", or rather who should lead, since it was a formal dance. She was wearing some kind of pink or peach gown. I decided to lead, put one hand to her waist the other up with her hand and away we went.
But I don't remember who she was... maybe she was a person I dreamed up.