She's aging like we all do. Perhaps a little prematurely due to tanning, smoking, etc.. but I think the real reason she looks a little older in the latest set is due to her make-up and the lighting scheme, white balance and exposure. The high key light from the Sun creates hard shadows on every angle of her face, while bleaching out the area around her eyes which have an larger than usual amount of white makeup (perhaps to hide bags under the eyes - could have had a late night or too many drinks the night prior, judging from her uncharacteristic puffiness in this shoot). To compensate for the high key light they've used a reflector on the ground, but all that serves to do is overexpose her (needed to adjust white balance, big time). Depth of field is also a little out of wack, making her nose and chin look more pronounced than usual... I wouldn't make a broad pronouncement about her beauty based on a badly photographed set but obviously she's not growing younger with time. So what...She's still an absolutely bomb-ass chick in my books.