This sweet yellow party dress was first seen in the 1978 , where actress Didi Conn wore it as Frenchie. After that, the dress very likely went into rental stock, where it This sweet, white 50s style gown with matching capelet was first worn by Olivia Newton John as Sandy in the classic film in 1978. The dress and capelet both made their way Grease: Stockard Channing as Rizzo Girls Do Film Beautiful 1950's Sandy Grease Style Prom Dress Size 6 8 #169774451