Taylor told the magazine she had a "frenemy" relationship with another singer who she claims "basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me."
Most of the Internet speculation up to this point has centered on KATY PERRY. In fact, Katy herself appears to think she's the un-named singer because yesterday she Tweeted ...
Watch out for the Regina George in sheep's clothing...
— KATY PERRY (@katyperry) September 9, 2014
Regina George, by the way, is the main villains in the movie "Mean Girls". It's unclear, though, if Katy is referring to herself or if she's saying Taylor is a mean girl and just putting on an innocent act.
What we do know for sure is that last year a backup dancer did an interview that confirms he and a few other dancers did jump ship. "I was with Taylor for the first six months," he said, "but then Katy contacted us. We weren’t really dancing in Taylor‘s tour anyway so I had got a little bored and I really wanted to do a promo tour."
IN DENIAL - ARIANA GRANDE REFUTES 'DIVA' ACCUSATION: ARIANA GRANDE was accused of going full-on diva during an Australian press tour -- a claims he denies.
Ariana reportedly had a list of subjects people couldn't ask her about. Among those topics, relationships and ex-boyfriends, MARIAH CAREY, her Nickelodeon show "Sam & Cat" and her former co-star Jennette McCurdy, and working with JUSTIN BIEBER.
She also supposedly demanded she only be photographed on her left side. Although none of that mattered because most of the media outlets didn't get to photograph her.
Word is, during her first shoot with an Australian newspaper, she kept stopping to check each frame the photographer took, and making him delete any she didn't like. Then she allegedly decided to change outfits in the middle of the shoot, which kept everyone waiting 20 minutes.
One of her reps finally came out and asked the photographer to delete ALL his previous photos. When he refused, all the rest of the day's interviews and photo shoots were cancelled.
But Ariana says none of that is true. She told an Australian radio show the photographer made it all up. "It was just a photographer or something who got mad at me because I left to change my outfit mid photo shoot because I didn't like my top. I was like, 'Oh, I'll be right back!' and then I came back and he had left."
"And then he came out and said all these ridiculous untrue things about me."
UPDATE - SOURCE SAYS JOAN RIVERS UNDERWENT UNPLANNED BIOPSY: A source is telling the New York Daily News that JOAN RIVERS' doctor interrupted an endoscopy being performed on the legendary comic to do an unplanned biopsy that cut off her air supply, resulting in her death.
Experts say that type of biopsy should only be performed in a hospital.
According to the source, Rivers' doctor was on hand -- but not performing -- the scheduled procedure at Yorkville Endoscopy in New York City on August 28th. When the physician noticed something on her vocal cord and asked for instruments to take a biopsy himself "they let him," the source said, adding, "A huge no-no."
The source tells the paper that when Rivers' doctor manipulated her vocal cords, they seized -- called a laryngospasm -- which cut off her air supply, leading to cardiac arrest. Rivers was undergoing what Deborah Norville described to ABC News as "a diagnostic procedure...[to] see why her voice had gotten raspy."
BABY POOP: SARA GILBERT revealed on "The Talk" yesterday that she's pregnant. She actually surprised her co-hosts with the news during a segment they're doing this week called "Face Your Fears".
Sara was dared to be sandwiched between two beds of nails, while someone broke a cinder block with a sledgehammer on top of them. At first, she acted like she was chickening out of the challenge, and even made it look like she was going to cry. Then she said, "I actually can’t do it, because I’m pregnant."
Although this will be the first child for Sara, 39, and her 49 year-old wife, songwriter Linda Perry, it will be the third one for Sara. She and her former partner, TV producer Ali Adler, have a 9-year-old son who was born to Adler, and a 7-year-old daughter that Sara carried.
MAZEL TOV!: ASHLEY TISDALE of "High School Musical" fame got married Monday night and her co-star VANESSA HUDGENS was one of her bridesmaids.
Ashley and her new husband, singer Christopher French, have been together since late 2012. French proposed to her atop the Empire State Building in New York City in August of last year.
WATCH: ELLEN twerked with NICKI MINAJ on her show yesterday. Well, more accurately she inserted herself into Nicki's "Anaconda" video ...