What? Nobody mentioned Elly May Clampett from Beverly Hillbillies. Donna Douglas is definitely doable...at least she was before her age crept up on her.
Others on my list are...
Terri (Pricilla Barnes) from Three's Company. Her first season consited of constant nipple shots, in addition to that wedding ring in every episode.
Heather Locklear .. Stacey from T.J. Hooker
Barbara Eden... for some reason I think she was hotter on Harper Valley PTA than she was as Jeannie.
Barbara Feldon... Get Smart's 99
Maureen McCormick (Brady Bunch) Marcia, Marcia, Marcia!!!
Lydia Cornell.... forgotten babe from Too Close For Comfort
and Theresa Ganzell.. often played the dumb blonde on Johnny Carson's late night skits but was also Greedy Grechen on Three's Company.