Nirvana Shirt https://www.nirvanashirt.store The smiley face logo is so iconic that even Kurt Cobain's bandmates claimed to have designed it. However, since Cobain is not living, his former bandmates could not give a definitive statement about whether Cobain had designed it. The lawsuit has been filed in the Central District of California. However, Nirvana's lawyers have filed a declaration claiming that all parties agree on the smiley face logo.