Little Sleepies has become the matching pajama brand that families like mine can't stop talking about, and celebrities can't stop wearing. The Kardashian family has been spotted in multiple matching sets, with Kylie Jenner, Khloé Kardashian, and even the little cousins wearing coordinating Little Sleepies during holiday mornings and cozy nights in. They're not the only fans, either - Hilary Duff, Mandy Moore, Chrissy Teigen, Olivia Culpo, and Meghan Trainor have all shared snaps in their favorite styles.