Justin Bieber just recently started his headliner concert, “Purpose,” but controversies already surfaced regarding the event. According to the latest report, fans of the all-time popular rock group “Nirvana” along with some rock websites slammed JB for imitating rock legend Kurt Cobain.

The Biebs admiration of Cobain was shown on his tour that kicked off in Seattle, WA where the Nirvana frontman was highly known to had come from. Unfortunately, a headline from Consequence of Sound that reads, as “Justin Bieber defecated on the memory of Kurt Cobain with cringeworthy Seattle gig,” appeared to make a negative statement among the loyal fanbase on the late musician.

More than that, the site claimed that Bieber mimicked Cobain’s looks during his unplugged performance by sporting a Kurt Cobain t-shirt and an acoustic set inspired by Nirvana’s 1993 MTV Unplugged performance. As if that was not enough, Alternative Nation points out that Bieber went on “full douche mode” because of his Cobain-inspired outfit that was popular during the 90s Grunge era.

As a result, some Nirvana fans shared their disgust on Twitter:

On the contrary, Uproxx notes that there is nothing bad at what Bieber did on his concert. They went on to explain that Cobain is not Bieber and vice versa but they could imagine that the respect is still there.

They also said that Bieber paying a tribute to the iconic rock star was genuine. Notably, the 22-year old singer was allegedly labeled as a “poser” when he attended American Music Awards wearing another Nirvana shirt.

“Of course, he’s a fan of Nirvana. I think it’s so funny that all these people are up in arms,” Bieber’s stylist told Harper’s Bazaar. “I’m sure Kurt Cobain would be like—I mean I can’t speak for him, obviously—but I don’t think he was so snotty or that he would diss anyone who appreciated his music. I think he understood that that is like the antithesis of music appreciation.”

In fact, Cobain’s wife Courtney Love and Nirvana’s bassist Krist Novoselic do not have bad blood with The Biebs at all.