She just turned 39 over the weekend.
And mother of two-year-old twins, Rebecca Romijn, celebrated ahead of the milestone by parading her stunning figure in a not one but two bikinis.
The X Men star braved the cold rainy weather on Friday to model the swimwear in a fashion shoot in Los Angeles.
Svelte: There was not an inch to pinch on the tanned and toned actress and model, who gave birth to her twins Charlie and Dolly, two and a half years ago
White hot: She also slipped into an all white crochet two-piece throughout the day, which accentuated her flawless glowing skin and muscular back
Family: Rebecca is seen here with her husband Jerry O'Connell and their two twins, Charlie and Dolly, in August this year
