The hot body helps.
It does, people. Sandra looks hot partly because, as we can see from her pipes here, she's in great shape. She's also standing up straight and confidently, and staring those photographers right down. Also note her head tilt. She knows the perfect angle to avoid a double chin and make her eyes look come-hithery. The easiest way to learn this trick? Practice in your bathroom mirror. (That's probably what she did, too.)