Here we are at Christmas in 1980. For those slow with math that is over 30 years ago and except for the beehive hair due she looks the same. However here is more proof. Take a look at the rest us and watch us change...but not Wendi.
1989 (I think). The hair has changed and she now wears glasses however she looks exactly the same as a decade earlier.
1991 we all look different...except Wendi
See even Larry changes he had hair in my wedding photo this was only taken 6 years later.
You can see from this photo evidence Wendi either aged to her adult status when she was 10 years old or she has somehow managed to stop the aging process all together. Either way I would like an explanation.