If you’re like us, you’ve probably wondered what famous people add to their carts. Not the JAR brooch and Louis XV chair, but the hand sanitizer and the electric toothbrush . We asked Lena Dunham about the Joe Boxer underpants and Glutino whole-wheat crackers she can’t live without, on the occasion of the August 1 release of Jenny Zhang’s Sour Heart , the first book from Dunham and Jenni Konner’s new Lenny imprint . Saved View Want to be emailed about sales and other updates to your saved