Kim Kardashian’s nude Paper magazine pictures are causing a firestorm—but her sister Khloe explains that she’s sending a strong message.

“People were just so hard on her during her pregnancy, that I think she feels so liberated to show everyone ‘Look how bomb I look!’” Khloe told E! on Friday about Kim,  34, mother of North West, 16 months.

“So I kind of love that she’s saying a big F you to the world,” Khloe, 30, h noted of Kim showing off her big breasts and famous butt.