Kristen’s plan to win Rob back reportedly involves getting in his pants — his underpants, that is. According to a new report, Kristen is wearing Rob’s old undies to help her cope with their trial separation.

Dr. Ava Cadell, founder of Loveology University agrees, tells us, “Kristen Stewart [wears] Rob Pattinson’s [clothes] because she cannot imagine her life without him!”

Unfortunately, Rob is not a fan of Kristen wearing his underwear!

“He thought it was creepy. Kristen’s clinginess has been a problem, and this is just a step too far!” the source adds. reached out to Kristen’s rep. We have not received a comment yet.

What do YOU think, HollywoodLifers? Is Kristen wearing Rob’s underwear? And if so, is that cute or gross?

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