‘Knots Landing’ star Donna Mills claims Sandy in ‘Grease’ was modeled after her: ‘I found out years later’
Donna Mills claims she was the inspiration behind Sandy in "Grease." The actress, who starred in the "Dallas" spinoff "Knots Landing," recently took to her Instagram and shared a video of herself dressed up as the character from the 1978 movie, a role made famous by Olivia Newton-John. In the clip, the 81-year-old claimed she was the "model" for Sandy. "Does the character Sandy from Grease look similar to me?’" she captioned the post.