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Luann de Lesseps rode in San Francisco’s Pride Parade on Sunday with a group that was voted “most outrageous” — but we hear “the Countess” could’ve also won “biggest diva.”

De Lesseps, who was in town to perform her cabaret show, rode with “Emperor” Leandro Gonzales and drag queen “Empress” Pollo Del Mar for LGBTQ nonprofit the Imperial Council.

But a spy said the “Real Housewives” star was “barking orders the entire parade . . . She was yelling at [an associate] who was then yelling at volunteers — three of whom were deaf.”

The source added: “She was very concerned with people recognizing her. She completely stressed volunteers out by micromanaging . . . [about] a banner announcing her presence.”

De Lesseps went to rehab after a disorderly intoxication arrest in December.

But a SF spy said, “By the time the parade started she was pretty tipsy and then had a paper cup of booze stashed in the side of the car.”

Reps for de Lesseps told us: “She was not tipsy during Pride because she does not drink alcohol. She was sipping sparkling water in a cup in the car.”

Either way, we hear that along the parade route, de Lesseps kept distracting a “wheel monitor,” a mandated person in charge of making sure no one gets run over.

“She kept calling people [over to her vehicle], which you can’t do,” a spy said. “[Her] contingent was yelled at numerous times by security because . . . they kept pulling people in from the audience.” That also meant her ride went too slow.

The insider added: “It was frustrating. It was not fun, which it should have been. It was very stressful.”

De Lesseps’ reps concede, “It is conceivable that it was perceived that she was micromanaging and concerned about banner placement, but she’s a perfectionist and a professional, which is why her cabaret show is so good and selling out.”

Reps for the Imperial Council told us, “We would never jeopardize our favorable and outstanding relationship with SF Pride by knowingly allowing its stated rules of conduct to be broken. It is exclusively our intent to provide a safe, enjoyable environment for our volunteers.”