Liz Smith

STEFANIE POWERS, still fondly remembered for "Hart to Hart" as Robert Wagner's sleuthing wife, keeps on keeping on. Tuesday she opens in L.A. for a two-week stint in "The King and I." She's been touring in the Rodgers & Hammerstein classic, getting nifty notices. The opening night is a fund-raiser for her great charitable passion, The William Holden Wildlife Foundation. (The late screen idol Holden was Stefanie's personal passion until his death in 1981).