GWYNETH-PALTROWself230mag.jpgFrom the looks of her body, actress Gwyneth Paltrow is proving she's ready for summer!

Chris Martin's wife looks incredible in a sexy blue bikini top and short jean shorts on the cover of Self Magazine. The blonde beauty is also getting candid about her challenge areas. Gwyneth tells the mag:

    "My butt! My butt, butt, butt. When Tracy met me, she said that I had a long, square butt that she was going to redesign, and I was, like, 'Yeah? Good luck.' The amazing thing is, she was right! And it's still changing!"

So how does the mom of two stay so lean? The Oscar-winning actress adds:

    "I do 45 minutes of cardio five days a week, because I like to eat. I also try for 45 minutes of muscular structure work, which is toning, realigning and lengthening. If I'm prepping for something or I've been eating a lot of pie, I do two hours a day, six days a week for two weeks."

Her hard work in the gym has certainly paid off! Read how Ms. Paltrow got her body red carpet-ready for the Iron Man 2 premiere ... after the jump.