Prince William has long kept his thoughts about his estranged brother and sister-in-law to himself, but according to palace insiders, Meghan Markle’s latest attempt to channel Princess Diana has finally pushed him over the edge.

A recent Instagram post featuring Meghan in a purple Northwestern University sweatshirt—eerily similar to the one worn by Diana in 1996—has reignited tensions between the Sussexes and the royal family. Behind the palace walls, William is reportedly furious, feeling that Meghan is using his late mother’s memory for attention.

“William is seething,” an insider spilled to Radar Online. “He’s always been incredibly protective of his mother’s legacy, and he sees Meghan’s repeated nods to Diana’s style as more than just fashion choices—they feel calculated.”

“Meghan and Harry have ruffled plenty of feathers in the royal family, but this latest stunt? It’s really struck a nerve,” the insider added. “On the surface, wearing a college sweatshirt doesn’t seem like a big deal, but to William, it’s another calculated move.”

Adding fuel to the fire, Meghan’s recently launched lifestyle company As Ever—a rebranded version of the now-failed American Riviera Orchard—has also come under scrutiny. Some royal watchers claim she’s subtly invoking Diana’s timeless elegance to market her products.

“She’s opening herself up to criticism,” the insider continued. “Diana’s image should be preserved with dignity, not used as a marketing tool.”

Meanwhile, her lifestyle venture 

As Ever has already faced hurdles, including a trademark dispute that forced a rebrand. Her previous attempt at launching American Riviera Orchard saw limited success after she gifted jars of homemade jam to celebrity friends.