Olivia Newton-John reached No. 1 for a second consecutive time with "Have You Never Been Mellow" on March 8, 1975.

LOS ANGELES -- Didi Conn is remembering her late "Grease" co-star Olivia Newton-John, one day after the beloved actress and singer died at her Southern California home. Conn, 71, said she wanted to ...

'Grease' Star, 74, Reveals How She Calmed Olivia Newton-John's Nerves originally appeared on Parade. Didi Conn revealed how she soothed co-star Olivia Newton-John's nerves with improv on set of the ...

Olivia Newton-John is being honored with a theatrical re-release of her beloved 1978 movie musical, Grease. The film is slated to return to AMC Theatres on Friday in select cities with proceeds to ...

When Olivia Newton-John brought Sandy’s first day jitters to life, she was experiencing her own. Didi Conn, who played Sandy’s friend in the beloved 1978 film Grease, opens up to PEOPLE exclusively ...

Long before she sang wink-wink sexual lyrics in "Physical," Olivia Newton-John was a pure-as-snow country singer. That all changed when she joined the cast of 1978's classic musical "Grease." Even now ...

Olivia Newton-John died Monday at her ranch in Southern California, her publicist confirmed to CBS News. She was 73. No cause of death was given in a statement on her official Facebook page, but ...