My mother is 54 and my aunt is 59. Both have followed a mainly vegan/vegetarian diet their wholes lives. My mother loves the sun and even as a kid I remember her going outside with a timer and doing 15 minutes on one side and then doing 15 minutes on the other. She has never been extreme about it and I don't remember her ever having a sunburn. My aunt, on the other hand has done as much as she can to avoid the sun and is religious about sunblock and wearing wide-brimmed hats.
Well even though my aunt is older, she has almost no wrinkles and has amazing looking skin, while my mother, who is younger, actually looks older than my aunt because of how wrinkled her face looks.