Kaia Gerber stars in Hanes x Karla campaign Stylist Karla Welch has teamed up with Hanes on an exclusive range of white tees called, Hanes x Karla. For the campaign captured by her husband, Matthew Welch, she tapped models Kaia Gerber and Joan Smalls. For men, singer Justin Bieber fronts the 1990's inspired shots. Paired...