It seems like Cher actually can turn back time.

While frolicking through a summer vacation in St. Tropez, France in late June, the legendary diva radiated a healthy glow as she walked barefoot in the sand.

“She looked happy and there were no signs of any illness or that she had slowed down at all,” an onlooker tells Closer. “Her body looked great, too, in the sexy outfit she was wearing.” In fact, Cher says she feels like a kid again. “Jumped in pool (with all my clothes on) cause kids dared me 2,” she recently shared on Twitter. “How old am I now?”

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Cher performing in Phoenix in 2014.

It wasn’t that long ago that fans of the 69-year-old entertainer thought they might have seen the last of her. She was forced to halt her Dressed to Kill concert tour last November after contracting a potentially fatal virus that affected her kidneys and threatened her heart.

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But after taking time off and seeing some of the best medical experts around (she’s even gone to Germany to try new treatments), “the doctors have given her a clean bill of health,” an insider reveals to Closer. “Cher is doing amazing. She says she’s back on top, feeling healthy and ready to get back to work.”

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Cher at the 58th Annual Academy Awards in 1986.

Cher announced her return to health with a triumphant appearance at the Met Gala in NYC in May as Marc Jacobs’ date, and now there are even indications that she will head back out on tour. “Going to rehearse with dancers. I’m so happy to see them,” Cher said in June. “Haven’t seen anyone since before the hospital!” The insider confirms that Cher is raring to go: “She feels like she got a second chance. She says she’s 100 percent better and she can’t wait to get back on the road.”

After fighting the virus that nearly killed her, though, Cher has reevaluated her workaholic tendencies. “Her health scare really made her think about life,” says the insider. “Cher has made her life very simple. What makes her happy now is traveling, good friends and great food. Cuba is next on her list.”

To read the full story on Cher, pick up the new issue of 'Closer Weekly' on newsstands now!