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 Sold at Auction: Olivia Newton John, Olivia Newton John "Sweet Sandy" Outfit Worn to a "Meet N' Grease" Event 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 Smiffys Grease Sandy Costume in Yellow for Adults, Skirt, Shirt, Mock Cardigan, Belt, and Headband, Officially Licensed, Ideal for Matching Fancy Dress with Cardigan and Belt Details : Amazon.co.uk: Toys & Games Year 2008 Barbie Grease 30th Anniversary Series12 Inch Doll FRENCHY JNL Trading