Back in May, we shared the news that Olivia Newton-John had to postpone a few of her tour dates due to a sciatica flare up. Unfortunately, a few weeks after that news, her camp released a statement announcing that the entertainer's recent health problems were a result of cancer.

After more than 20 years in remission, the 68-year-old Grease star's breast cancer relapsed for the second time and has "metastasized to the sacrum." In the announcement posted on her Facebook page, she was seeking "natural wellness therapies" and "a short course of photon radiation therapy" to fight the cancer.

Now, three months after her shocking revelation, Newton-John has spoken out about her battle for the first time.

The singer released a video message in which she not only gave fans an update about her health, she also thanked them for their support and shared details about The Olivia Newton-John Cancer Wellness and Research Centre's new campaign.

So how is she doing?

Newton-John reassured fans that she is recovering well and "feeling great" since we last heard from her.

"Firstly, I'd like to express my gratitude to all of you who sent such kind and loving messages of support over the past few months," the Physical singer said in the emotional video.

"Your prayers and well wishes have truly helped me, and continued to lift my spirits," she continued. "I'm feeling great and so look forward to seeing you soon!"

Newton-John also added that her Melbourne-based cancer and wellness centre launched a new campaign called "We Go Together", in hopes of raising $1 million to "continue to grow our critical research, pioneer trials and deliver holistic care to all who are in need."

"During this healing time "” recovering from my breast cancer relapse "” I've had time to reflect on how proud I am of this centre, and the important contributions it makes to the lives of the communities it serves," she said. "The Wellness Centre programs are improving the lives of people going through cancer. This was my dream, and it's now a reality."

The entertainer has been an advocate for breast cancer awareness since her first bout with the disease in 1992. Her battle included nine months of chemotherapy, a partial mastectomy and breast reconstruction surgery.

We're so glad that the star is doing well and once again winning her battle against cancer.

You can watch Newton-John's video message in its entirety below:

Don't forget to share this good news with an Olivia Newton-John fan!