'Grease' Star Susan Buckner Sandy's Cheerleading Pal ... Dead at 72
Susan Buckner -- who played Olivia Newton-John's preppy friend in "Grease" -- has died ... TMZ has confirmed.
The actress's rep announced the sad news Tuesday, saying ... "Susan died peacefully on May 2 surrounded by loved ones." No other details surrounding her death were provided, including a possible cause.
Susan is most famous for playing Patty Simcox in the 1978 hit musical film -- leaving a mark as Sandy's girly-girl pal ... who had a striking appearance thanks to her big glasses.