Don’t get your lederhosen in a knot.

Bo Dietl, clad in the traditional German leggings, got in the face of fellow mayoral candidate Nicole Malliotakis at Saturday’s Steuben Day Parade on Fifth Avenue.

“She’s walking by and I say, ‘Nicole, are you German also?’” Deitl told The Post afterward.

Malliotakis has made much of her Greek-Cuban heritage on the campaign trail.

“She says, ‘You’re so mean,’” Dietl said.

It touched off a testy exchange over campaign petitions between Malliotakis, the GOP candidate for mayor, and Dietl, who failed to get the Republican line after flubbing a meeting with party honchos.

Dietl, angered that the Malliotakis campaign filed a routine challenge to signatures he had collected, has accused Malliotakis of criminal activity for her own signature snafus.

Malliotakis spokesman Rob Ryan brushed off Saturday’s dust-up, calling it an “informative discussion.”

“Everyone knows that Bo Dietl is a New York character, and I’m sure he wags his finger at numerous people every day,” Ryan said.

“The assemblywoman even complimented him on how great he looked in lederhosen.”

Mayor de Blasio — who was born Warren Wilhem and is of German descent — did not appear at city’s annual celebration of German pride.