Country singer Kelsea Ballerini pays tribute to Olivia Newton-John with beautiful cappella cover of 'Grease' hit

Amidst the news of Olivia Newton-John's tragic passing, country singer Kelsea Ballerini took to social media to pay tribute to her idol with a beautiful a cappella cover of her iconic Grease hit.

Filmed from inside her house, Ballerini belted out the lyrics to 'Hopelessly Devoted to You,' her voice reverberating against the high ceilings to up the song's already hefty emotional punch.

Alongside the heartfelt video, the 28-year-old wrote: "Olivia Newton-John forever 💔."

'Hopelessly Devoted to You' was a major hit for Newton-John in 1978, reaching the number three spot on the US Billboard Hot 100 and number 20 on the country chart. 

Newton-John died Monday morning at her ranch in Southern California, where she was surrounded by family and friends.

While a specific cause of death has not yet been revealed, a source close to TMZ reported that "she lost her battle to metastatic breast cancer."

The 'Physical' hitmaker is survived by her husband, John Easterling, who shared the news of her death on her official Instagram account, and her daughter, Chloe.

Funeral arrangements for Newton-John have not been announced.