I loved to watch how Dawn Wells would prance around in her not too revealing two piece. Then of course you had Tina Louise in the mix who made no bones about her horniness - awesome boobs too. That duo caused a lot of nocturnal emissions in the 60's.
Always fantasized that the two were lesbos and would get discovered in the jungle with Mary Ann mounting Ginger, fucking her with a huge strap on - "take it Tina, enjoy it you old cunt, reach around if you want".