Good Sandy Womens 1950s Yellow Grease Costume Medium Good Sandy Grease Costume Guide and Ideas Grease Sandy Summer Nights Party Britain See Olivia Newton John's Best Outfits as Sandy in "Grease" PS Fashion 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