Trigger: She has a fit and athletic body. (This phrase will work, however you can can also describe her physique in more detail to cater the results to your tastes.)
Example Prompt: In a vintage bedroom wrapped in soft morning light, a beautiful woman with warm olive skin and tousled brunette waves kneels on a velvet chaise lounge. She wears blush-toned lace lingerie, delicate and romantic, her gaze meeting the viewer’s through the fall of her hair. The camera holds a steady medium shot, angled slightly above her eye line, capturing the dappled light on her skin and the quiet allure of her relaxed posture. She has a fit and athletic body.