Olivia Newton-John: Brave Star Tours During Cancer Crisis

Sweet songbird Olivia Newton-John has kicked cancer in the teeth — and gone back on tour!

After undergoing months of natural and traditional treatments, the gutsy if publicity shy "Grease" star was back on stage on Aug. 24. “I’d like to thank any of you in the audience who have sent me cards and well wishes and prayers,” the grateful singer told fans in Evansville, Ind.

The "Hopelessly Devoted to You" singer, 68, postponed a series of concert dates in May due to severe back pain. Olivia later learned she was battling breast cancer that had spread to her lower back — 25 years after she’d first beaten the disease — and postponed her entire tour.

At the time, it was announced the angel-voiced Aussie singer would undergo “natural wellness therapies,” along with a “short course of photon radiation therapy.” As The National ENQUIRER reported, Olivia turned to her own homegrown marijuana, relying on cannabis oil to battle the deadly disease.

Her daughter, Chloe Lattanzi, said: “It’s an amazing plant. It inhibits cancer cell growth.” Olivia has also been using kitten therapy — watching frolicking felines as a feel-good cure-all.

After Olivia’s first diagnosis in 1992, the bubbly blonde underwent chemotherapy, a partial mastectomy and breast reconstruction. This time around, “we are not trying to be positive,” says her husband, John Easterling. “We both have the same unshakable belief ... an absolute knowingness that we can turn this around!”

Thankfully, Olivia’s been successful so far — and her An Evening With Olivia Newton-John tour will continue through December.