H&M Celebrates Fifth Avenue Flagship Opening with Jeff Koons Olivia Wilde Justine and Jeff Koons Alek Wek Adam Winberg, Vogue Julie Henderson A detail shot of the collection Julio Santo Domingo and Nataya Poniatowski Laura de Gunzburg Maria Cornejo and Victoria Bartlett Heidi Mount and Eniko Mihalik Ryan McGinness Birdy performing Margot and Cleo Wade Roxanne Lowit Alejandro Ingelmo Athena Calderone