@Kitkat- Well it's when you pick a day you randomly walk around the mall in cosplay and have fun with your friends! or a park etc.
Anime USA 2013 Cosplays
Rose Tyler "unquiet dead" (Thursday night and Friday evening)
Yuki Cross Vampire Knight (Friday Morning+Afternoon)
Akane Tendo from Ranma1/2 (Saturday Morning +Afternoon)
Trish from Devil May Cry (Saturday Evening)