We were never entirely convinced by Bo Derek. She had rather thin lips for our taste and her body was a bit straight up and down, apart from having her bust stuck on the front in an unconvincing way. I think it is a bust/waist/hip proportion problem. Her shoulders were too large for her hips to look right.
Secondly, we have Joelle Dorio, Penthouse Pet of the Month for October 1966, photographed by Philip O Stearns in Corsica. Joelle presents an altogether more harmonius prospect we feel.