Cagalli very much came alone. Not that she wasn't interested - the setting was beautiful, and being around a bunch of happy people usually lifted her mood. She even made a point of dressing up (http://i697.photobucket.com/albums/vv333/cosplayforyou/2c1fd18e24f292e4513d923f.jpg) quite nicely, because if she's going to wear a dress then she's going to look good in it.

Hopefully no one comments on the cleavage though.

She doesn't even look all that bored right now, glancing around the beautiful scenery.