Who knew sweats-loving shlubs would have a fashion moment? Jennifer Lopez, who has her own activewear line, wears a pink hoodie and shorts in her ”I’m Real” video with Ja Rule. Frankie B., Bella Dahl, Sean John, and Roc-A-Wear all offer variations on the velour, fleece, or terry suits, while L.A.-based Juicy Couture, which introduced its sweats nearly two years ago, counts Madonna and Gwen Stefani as fans, as well as Gwyneth Paltrow, Jennifer Garner, and Cameron Diaz. ”They’re the sexy leisure suits of the 21st century,” says designer Pamela Skaist-Levy of her belly-baring outfits ($160). Just spare us the gold medallions.