The soldiers are meeting at their captain's house to meet for the battle plan.

You need your father for something, so you walk downstairs, not realizing their having a meeting.

You're wearing a blue, thin, short dress to be casual in your own home, and you walk downstairs.

The soldiers all look at you, and some whistle. They know you don't have any suitors at the moment, so they're all riled up.

Alex, in particular, smirks and looks you up and down.