The final retro touch? The large buttons down the front. Hadid updated the '80s-inspired top with a few modern touches, including a pair of mid-waist mom jeans, a pair of slim sunglasses ...

After all, it bore all of the hallmarks of Lady Di's '80s looks—the ruffles! The sleeves! The buttons! The polka dots! Hadid's sunny yellow polka dot top featured a round scooped neckline with ...