Matching Brother Pjs Etsy Big Brother Blue Print Boys Long Pajamas ShopThatStore.com "Big Brother" Printed 2 Piece Short PJ Set shopthelittlehen Brother and sister wearing pajamas in children's room Stock Photo Alamy Little Brother Sleep Suit True. These Little Brother Pajamas are perfect for younger siblings! Made with comfortable and breathable fabric, they are sure to provide a good night's rest. Their design includes the phrase "little brother" for a cute and playful touch. Get them for your little one or as a thoughtful gift for a new baby in the family.