Diva drama is afoot from yet another Madonna-related letter!

This one again comes from Gotta Have Rock & Roll, but unlike the Tupac letter, this letter was written by Madonna herself.

This very personal letter is up for purchase on a Gotta Have Rock & Roll online auction. Bidding is set to start on July 19.

But, here’s where it gets extra juicy:

According to the screenshots provided by the auction site, Madonna took some time out to throw some shade against Whitney Houston, writing that she was “horribly mediocre.”

Photo: GIPHY

THE. WHITNEY. HOUSTON.

The letter is addressed to “J” and is thought to have been written to actor John Enos in the early 1990s.

The auction house notes that the letter was given to them by Madonna's longtime close and personal friend, Darlene Lutz, who was basically an “A1 from day one” to Madonna at the very beginning of her career.

Houston wasn't the only person to get a taste of Madonna's disdain.

Sharon Stone was also grouped into the "mediocre" category with Houston. According to what she wrote in the letter, at the time, Madonna was in a “foul mood” and was “so uncomfortable in [her] own skin.”

The passage that references Houston states, “I have made so many people angry that I’m being punished and basically made to be quiet and sit in a corner, whole other less interesting and exciting people are reaping the benefits of the roads I’ve paved.”

She goes on to write, “It’s so unequivocally frustrating to read that Whitney Houston has the music career I wish I had and Sharon Stone has the film career I’ll never have. Not because I want to be these women because I’d rather die, but they’re so horribly mediocre and they’re always being held up as paragons of virtue and some sort of measuring stick to humiliate me.”

The letter continues in a similar fashion, making it clear that Madonna was feeling underappreciated by her industry.

“Everything I do is so original and unique and I put so much of myself into it like my book and record and it’s only brought me heartache and pain,” she wrote. “I don’t think I can play the game to be accepted. I’m too intelligent, I have too much pride.”

Madonna even went on to suggest that perhaps she was “born in the wrong place and time and probably the wrong sex!”

As the old saying goes, it would seem that comparison is indeed the thief of joy.