Irina Shayk Sizzles For Jack Magazine

Making for the perfect choice when it comes to helping boost sales, Irina Shayk graces the cover of the March 2011 issue of Jack magazine.The Russian hottie put her hotness on full display as she posed for a range of provocative pictures adorning the pages of the men's publication.

The Jack appearance comes as Miss Shayk has found herself surrounded by pregnancy rumors - with gossipers claiming that the SI Swimsuit Issue covergirl is expecting a baby with boyfriend Cristiano Ronaldo.A source told the tabloids, "Although they weren't planning on having a baby so soon, the truth is that nothing makes him happier than his son. And the birth of the boy awakened Irina's desire to become a mother.”

The insider added, “They had been talking about marriage. Cristiano wanted something very special and romantic, and on Valentine's Day he travelled to New York to surprise Irina. He asked her to marry him.”

Photo Credit: Jack