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 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 Grease Sandy Dress Etsy Lee Pace Fan! costumeloverz71: Sandy Olsson (Olivia Newton John) Grease Kids Pink Ladies Costume Jacket Walmart.com