There was a great scene on THAT GIRL of an eccentric British photographer who gets Ann Marie to play in a fountain for some photos. Haven't found it online, unfortunately.
She wades in the fountain but only up to her knees, and only her shoes and lower pantyhose get wet, and she never gets fully wet...the dress and the hair remain dry.
FYI I have a videoclip of the Cher wetlook scene with McClean Stevenson that you cited, but I cannot reply to that thread because the thread has been closed.
Actually, if you want to see That Girl really get it, go to youtube and type in "Marlo Thomas Pied in the Face. This was a fantastic shot of Marlo getting pied.