During an exclusive interview with E! News, Chelsea Clinton revealed she and husband Marc Mezvinsky already have their first daughter's Halloween costume all picked out. The 35-year-old new mom told Maria Menounos, "She's going to be a lady bug. Maybe my dad could be a gardener or something." Having just celebrated her first birthday, 1-year-old Charlotte is no stranger to Halloween attire. Bill Clinton told E! she dressed up on the holiday for the first time last year as an infant.