At 39 years old, model and actress Rebecca Romijn has never looked better. The “X-Man” star, who gave birth to twins Charlie and Dolly in December 2008, showed off her impressive six-pack abs, lean legs and firm butt during a photo shoot in L.A. After donning a skimpy gray and yellow bikini, the 5-foot-11 beauty changed into a mint green cardigan and matching daisy dukes for a second round of photos. There was not an inch to pinch on the tanned and toned actress and model, who gave birth to her twins Charlie and Dolly, over two and a half years ago. The actress recently said she had trouble losing weight post pregnancy. “I’d gotten very fluffy for the whole childbearing experience. You do that when you get pregnant, and then you find out you’re having twins, then you’re nursing them for eight months, and then you’re finishing up their meals,\' she revealed on The Talk, last week. I’d forgotten how much I was really supposed to be eating…and then fast food started making its way into their diets and I felt like I was getting lazy about food preparation.” In order to get back into shape she said she omitted dairy, sugar and starch from her diet, and indulged in yoga.