Elton John has been called “ignorant” and a “fascist” in the latest round of name-calling between the rocker and fashion icons Dolce & Gabbana.

Meanwhile, stars including Courtney Love, Martina Navratilova, Andy Cohen, Ryan Murphy and Ricky Martin have aligned themselves with John, who called for a boycott of the fashion house founded by Domenico Dolce and Stefano Gabbana.

The feud began when John took exception to comments Dolce and Gabbana made about gay parenting, including a controversial Panorama magazine interview in which the pair reportedly said: “The only family is the traditional one.”

Us Magazine quotes Dolce in a subsequent interview saying: “No chemical offsprings and rented uterus: life has a natural flow, there are things that should not be changed. You are born to a mother and a father — or at least that’s how it should be. I call children of chemistry, synthetic children. Rented uterus, semen chosen from a catalog.”

John is raising two children with his husband David Furnish. John expressed his anger at Dolce & Gabbana on social media, including launching the hashtag #BoycottDolceGabbana.

Dolce and Gabbana later came back with #BoycottEltonJohn.

Gabbana held the line in an interview with Corriere della Sera, responding to John’s protest by saying: “I didn’t expect this, coming from someone whom I considered, and I stress ‘considered,’ an intelligent person like Elton John. I mean, you preach understanding, tolerance and then you attack others? Only because someone has a different opinion? Is this a democratic or enlightened way of thinking? This is ignorance, because he ignores the fact that others might have a different opinion and that theirs is as worthy of respect as his.”

Gabbana added: “It’s an authoritarian way of seeing the world: agree with me or, if you don’t, I’ll attack you. I even posted the word ‘Fascist!’ on his Instagram.”

Meanwhile, CBS Local notes that celebrities have been lining up in support of John. Navratilova tweeted: “My D&G shirts are going in the bin- don’t want ANYONE to wear them.”

“Murphy said not only will he personally cease to wear the brand, he won’t allow the characters in any of his shows to wear it, either,” CBS Local reports.

Us magazine notes: “For his part, John, 67, is continuing to celebrate his family. He shared a photo of himself with sons Zachary, 4, and Elijah, 2, via Instagram on Monday, March 16, captioning the shot, ‘Photo booth fun at yesterday’s lunch. #ShareTheLove.'”