As soon as spring is in the air, it’s sexy cardi time. In other words, it’s time to wear a barely-buttoned cardigan as a top. New-mom Emily Ratajkowski kept the Penguin I hate it when I have to be nice to someone I really want to throw a brick at shirt look alive and well this past week. Ratajkowski, who gave birth to a baby in early March, stepped out in a midriff-revealing, slinky black knit cardigan from Aya Muse. She paired the top with a pair of high-waisted, wide-leg beige pants and black sneakers. Under her arm was the carryall of the moment: a white shoulder bag.