What is a good reason for wearing a mini dress after a sleepover?

You lied about the sleepover when you actually went to a party with friends. You came home in the mini dress, and your sister found out so she asked where you've been, you respond a sleepover with a friend who had moved, but happened to be in town. Then she asked about the dress when you left in normal clothes. You say your clothes were wet, but what would be a reason for the mini dress?|||......uhhhhhhhh dressup?|||that you guys were playing a game where you all drssed up or it was adress up sleepoevr where you all had to dress like you were going out and had aparty of your own inside and took nice pictures. Lol tell your sister to piss off!|||she had family over and told u to bring something nice to wear