Victoria Principal, who starred for nine years as Pamela Barnes Ewing on the CBS nighttime soap, Dallas, mounts a Centurian 10-speed. Principal authored several fitness and health books, including The Body Principal in 1983.  Also in the early ’80s, Principal had a Top 100 hit: a duet with Andy Gibb, a redo of the Everly Brothers’ “All I Have to Do Is Dream.” Photo: Harry Langdon.