WICKER PARK — Harry Styles’ brand, Pleasing, is opening a pop-up in Wicker Park. The Pleasing AstroMilk Bar, 1623 N. Damen Ave., opensSaturday, giving shoppers a chance to explore a pop-up experience with outerspace and vintage diner aesthetics. The brand wanted to bring a pop-up to Chicago in the summer, said Sophie Kerr-Dineen, senior vice president of marketing at Pleasing.