OK! Exclusive: Inside Olivia Newton-John's Secret Wedding!

The love story of Olivia Newton-John and her husband, John Easterling, began 15 years ago and was finally cemented this summer with weddings on a mountaintop in Peru and then again in Florida.

After a broken marriage to Matt Lattanzi — with whom she has a daughter, Chloe, now 22 — Olivia was left heartbroken when her boyfriend of nine years, Patrick McDermott, went missing in 2005. But now the Grease star has found happiness again. Here, Olivia tells OK! about her magical wedding days.

"We were married in Peru, and it was so wonderful that we decided to do it again!" she tells OK!. "The second ceremony took place on Jupiter Island, near John's home, in a sunrise ceremony with an Episcopalian minister. "

Olivia, who sports a rare 5.1 carat natural intersecting twin diamond set in platinum, tells OK! that both she and John designed the ring to symbolize "the two of us and our love for each other."

As for the ceremony, the Aussie star wore a "simple white dress" and planned to wear sandals at the ceremony, "Until the night before I realized how cold it was going to be in the morning.? So John and I went shopping at 10 o'clock at night and I found some handmade suede boots and a traditional matrimonial shawl."

Olivia continues, "John's family from North Carolina were there, as were my daughter, Chloe, and friends and family. We had a dance floor set up in the yard with red, white and blue accents on the tables.

"There were hundreds of lights in the trees. We ended the evening with sparklers, joining hands in a labyrinth on my property. It was a very memorable moment and one I will always have in my mind."

For all the details and photos of Olivia's wedding, pick up the new OK! — on newsstands everywhere Thursday!