Levi Johnston has set a good example for his younger sister. The mother of Bristol Palin‘s son, Tripp, previously posed nude for Playgirl magazine. Now, his 18-year-old sister, Mercede, has posed nude for a four-page editorial in the September issue of Playboy.

How Bristol Palin Lost Virginity In “Not Afraid Of Life” Memoir

Mercede has been rather critical of her brother’s ex-girlfriend, Palin. On July 4, she took to her blog to respond to Palin’s story of losing her virginity to Levi, which she details in her memoir Not Afraid of Life: My Journey So Far. Mercede wrote:

“Does anybody really believe a good Christian girl, such as Bristol claims to be, would really lose her virginity in a tent? I don’t think so. Usually girls want their first time to be meaningful and special.”

“After she made those hurtful and indefensible statements in her book about my brother, I decided no matter how uncomfortable I feel talking about this, it is something which I must do. No one deserves to be accused of such a disgusting and horrendous thing. Especially not my brother who, believe it or not, truly loved Bristol with all of his heart.”

Mercede Johnston, Levi Johnston’s Sister, Naked For Playboy!

I have a feeling we haven’t seen the last of this girl. Those Johnston’s are awfully good at milking their 15 minutes of fame. Her Playboy issue hits stands August 12.