The Doors and the estate of Notorious B.I.G. are exploring legal options against Kendall and Kylie Jenner, who produced a series of T-shirts featuring rock and rap icons without securing the proper rights.

The famous-for-being-famous reality TV stars have apologized for selling $125 T-shirts bearing the likenesses of Tupac Shakur, The Doors, Metallica, Pink Floyd and the Notorious B.I.G. Over their faces were photos of a Jenner or the KK logo they used on their clothing lines.

Biggie Smalls’ mother, Voletta Wallace, wrote on Instagram: “I have no idea why they feel they can exploit the deaths of 2pac and my son Christopher to sell a T-shirt. This is disrespectful, disgusting, and exploitation at its worst!!!”

The sisters posted an apology last week that noted they had stopped selling the T-shirts. “These designs were not well thought out and we deeply apologize to anyone that has been upset and/or offended, especially to the families of the artists. We will use this as an opportunity to learn from these mistakes and again, we are very sorry.” The two promptly resumed tweeting vacuous comments about being jet-lagged, missing Italy and attending a fashion show.

Their apology is insufficient as far as The Doors are concerned. Sources close to the band confirm that they are considering taking legal action against the Jenners.

The Doors’ lawyer Anthony Keats sent them a cease and desist order that read, in part, "Your use of the registered trademarks in commerce is likely to cause confusion, mistake or to deceive consumers into believing that the Kendall + Kylie apparel was authorized by The Doors when no such authorization was sought or provided by The Doors.

"The superimposing of a selfie of Kendall Jenner over the iconic 'Lion' portrait of the late Jim Morrison is offensive and remarkable for its failure to recognize the rights of the estate of Mr. Morrison to control the use of his likeness.”

The Notorious B.I.G.'s estate has stated the matter has “yet to be resolved.”