Eva Chen is at the dry-cough end of a month-long cold. “I’m gearing up for this book tour and I’m so excited, but I’ve also had what feels like the flu. So when people are like, ‘you have it all!’ I’m like, but I also go through four boxes of Kleenex a day.” We’re on the topic of ‘having it all’ because Eva meets the conventional criteria. She’s the Director of Fashion Partnerships at Instagram (with the wardrobe to match). She’s married to Tom Bannister, a talented British television producer. She has two, criminally gorgeous offspring – Ren, who will be four in December, and 18-month-old Tao – and now she’s gone and written a children’s book.