Karlie Kloss is in full-blown mom mode after welcoming her third baby. "My past week 💕😇✨," Kloss, 33, wrote via Instagram on Sunday, September 28, sharing a carousel of photos with baby Rae. In one of the snaps, Kloss sat in bed wearing a silver sheet mask as she breast-fed the infant. While nursing Rae, the supermodel flashed a peace sign and puckered her lips at the camera. "Feeling extra grateful," she captioned another pic with Rae to her Instagram Stories on Sunday. Karlie Kloss Gives Birth to Her 3rd Baby With Joshua Kushner Kloss gave birth on September 18.