SoulCycle and Juice With Odd Mom Out's Jill Kargman, Patron Saint of Imperfect Parents

"Do you want to move up?" Jill Kargman calls to me from the front desk at SoulCycle on the Upper East Side. "They put us in Staten Island." This is code for bikes in the second row--and Kargman, a devotee in head-to-toe black SoulCycle athleisure, isn't having it. I'm not the only one Kargman is forcing front and center: Her mother, Coco Kopelman, a former ballerina and prominent patron of the New York City Ballet, has just arrived, lithe and beautiful in a "Halle B. is my Homegirl" tank top (an...