READERS have paid tributes after the heart-breaking announcement that Grease star Olivia Newton-John had passed away on Monday morning.

The singer and actress, who is also known for songs such as Xanadu and Physical, died at the age of 73.

Her husband John Easterling made the announcement to fans on her Facebook page, revealing she had passed away surrounded by family and friends.

Following the news, her Grease co-star John Travolta posted on Instagram: "My dearest Olivia, you made all of our lives so much better. Your impact was incredible. I love you so much. We will see you down the road and we will all be together again. Yours from the moment I saw you and forever!

He signed off: "Your Danny, your John!"

Grieving the loss of the stars, readers left some beautiful tributes.

Christopher Mcpoland said: “Beautiful woman an inspiration to all the other women out there suffering the same thing rip Olivia.”

Maxine Elliott said: “So sad she was an amazing actress and singer she will be missed.”

Jessie Critch said: “Very sad x”

Rebecca Collins said: “Rip lovely lady.”

Sharon Smith said: “Very sad news this evening (Monday).”

Linda Spencely said: “Oh wow that’s sad xx”

Margaret Irvine said: “So sad xx”

Janet Cassley said: “R. I. P Olivia.”

Mazzymoo Worthington said: “God love her and her family I’ve got Xanadu on right now, blessings, brought up singing her songs god bless xxxxx so sad xx legend xxxx”

Sandra Cadman said: “Sad news RIPxxx”

Julie Cooper said: “So sad. Xx”

Gill Mcphillips said: “Thought she had some songs and a lovely voice. RIP.”

Some readers shared their favourite moments of Grease, in which Olivia played the starring role of Sandy.

Tracy HawdonwasSmith said: “You better shape up cos I need a man and my heart is set on you.”

Mary Giles-Ellwood said: “My favourite film. Went to see it eight times. Know every word of every song!! Takes me right back.”

Charlotte Donnelly said: “Tell me about it, stud.”