Halloween, Christmas, New Years, Valentine's Day, St. Patrick's Day should be standard; There should be a girl in an outfit for these each year. US independence day, sure and why not have girls do each country's? you don't have to do them all each year, do different countries each year that would maybe get us some diversity in girls having them strip out of their native countries dress. Come up with something for Earth day or the summer and winter solistices.