Which Knots actresses have had plastic surgery?

OK, who out of the Knots Landing actresses have had some sort of plastic surgery since leaving the show? I think Donna Mills and Michele Lee just look too good to be true. They probably want to keep it quiet but I reckon both have had face-lifts! What do other fans think?

Valene and Karen I swear are from the same womb, if not then they sat next to each other holding hands waiting in the same surgery to have yet more and more cut and scraped... and makeup is a big part of knot's too.... But hey?! We loved them, we miss them and all is forgiven page!!