Wetlook World Forum

The last one is definitely not underage (and is a good looking young lady showering in her clothes then walking around in the street so well worth viewing, but be aware that the wetlook doesn't start till about 7 mins in).    

The penultimate one has been posted here before, without complaint as far as I can remember; whilst one of the spectators is a child the girl jumping in is in her late teens, IMO.

The second is one of the many videos of life in a Latin American village, and like most of them has a whole range of ages involved, several of whom get wet; the age of the 'most active' participant in the wetlook is uncertain, she might or might not be underage.

The first one is of a group of young women, all of about the same age; they are probably late teens IMO.