Wetlook World Forum

If you click on the website (canrusar.com) of the producer of the first youtube, you will see that it is an "archive of Russian candid busty girls, big tits and big boobs", and seems to consist entirely of images of overweight women.    I think we can assume that the video-maker selected only the overweight women to include in his youtube - there were no doubt plenty of other shapes and sizes of people doing the same thing but he ignored all but the busty women.   I think that this is a sort of baptismal rite in the Russian orthodox church, in fact.

As for the apparent shamelessness, unless you regularly wear wet clothes (or look at pictures of people doing so) you won't necessarily know that clothes can go see-through when wet (I doubt if mature members of the Russian orthodox church have even heard of a wet t-shirt competition!).    These people will anyway be concentrating on the religious significance of what they're doing, and even at other times women like these would probably find it impossible to believe that anybody would be interested in looking at their bodies in a sexual way.    (I think we know somebody else who thinks in much the same way, don't we, Malvineous?!).