The curvy socialite hated it when her body developed earlier than her schoolmates and was embarrassed by her changing figure. She said: "I was the first girl in my class to wear a bra. I remember crying in the bathtub. All my friends were super-skinny." The 29-year-old beauty even adopted a ritual in a desperate bid to stop her breasts growing. She explained: "I took a washcloth, made it hot, put it over my chest and prayed, `Please don`t let them grow any bigger. They`re embarrassing me.`" Kim eventually changed her attitude after speaking with her mother Kris Jenner. She told Shape magazine: "She helped me with my outlook: I have curves and that`s never going to change, so I`d better start embracing them." Kim recently admitted she only posed for Playboy in December 2007 because her mother encouraged her to do appear in the adult publication’s pages. She said: "I`m sorry I did Playboy. I was uncomfortable. "`Go for it,` my mother said, `They might never ask you again. Our show isn`t on the air yet. No one knows who you are. Do it and you`ll have these beautiful pictures to look at when you`re my age.` "