2. Jane Fonda in Barbarella (1968)
When discussing the hottest women of all time, don’t sleep on late-1960s-era Jane Fonda. Playing the bodacious title character in director Roger Vadim’s infamous sci-fi cult classic, the blonde and statuesque Fonda elevates Barbarella from campy fun to hormonal overload before the plot even kicks in; the film’s brilliant opening credits sequence, one that should serve as a model for a Kate Upton-led Barbarella remake (make it happen, Hollywood!), Fonda floats around in zero gravity as her gloves, legging, and helmet all come off and her boobs are teased, with the credits’ letters moving over and, thankfully, away from the nips.