Olivia Newton-John, Singer and 'Grease' Star, Dies at 73

Her success continued in 1981 when she released her song Physical, which became the No.

1 single of the decade, according toBillboard.

Newton-John reportedly soldmore than 100 million recordsover her five-decade career.

She also won four Grammy Awards and remained Australia’s all-time most successful solo music star.

“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 first moment I saw you and forever!

Your Danny, your John!”