Sharon Stone in Miami to honor sister

For Sharon Stone, charity really does begin at home.

She started Planet Hope in 1993 along with her younger sister, Kelly Stone, who was struggling with both emotional and physical problems.

On Friday night, during FUNKSHION Fashion Week, Sharon presented Kelly — who now suffers from lupus — an award for her philanthropy at The Setai in Miami Beach.

“She’s amazing, she really is,” Stone said of Kelly, who is undergoing chemotherapy to treat her illness. “She’s dedicated so much time to helping others, and now she is fighting for her own life.”

Stone is no slouch in the philanthropy department, either. The Oscar nominee (Casino) also has worked tirelessly for another cause — helping to raise millions for amfAR, The Foundation for AIDS Research.

This off-screen career has helped Stone prepare for her latest role: As the vice president, Natalie Maccabee, in the TNT original series, Agent X, which premieres at 9 p.m. Sunday.

“I think going around the globe for 20 years with amfAR negotiating policy, taking meetings with heads of state and trying not to have a crisis over such a tender issue is quite good preparation to be a politician, let me tell ya,” Stone laughed.

Agent X, costarring John Shea as president and James Earl Jones as chief justice, sounds like a nice break from all the heated chit-chat over the 2016 presidential election.

“It’s a fun, cute popcorn show,” agreed Stone, 57, who also wears executive-producer hat. “But it’s also about patriotism and heroics and takes an interesting look at current affairs.”

The single mother of three is particularly liking the fixed hours on her small-screen job as opposed to a movie, when actors often have to spend weeks at a time in a faraway location.

“We’re shooting in L.A., so it’s just a 10-minute drive to the set,” she explained. “I get to go to my kids’ school, activities or events. Sometimes I’ll scoot out in the afternoon.”

While in town, Stone planned to grab some well-deserved R&R.

“I’m from the East Coast, so it’s nice getting back there,” said the Pennsylvania native. “And I can’t wait for the weather in Miami. The climate is just gorgeous.”

She has great memories from filming 1994’s mob drama The Specialist with Sylvester Stallone here.

“I just remember the Cuban influence — the music, the food, the whole experience. I loved watching those storms coming from far away with lightning in the distance. It was a nice time in my life.”