By Amber Goodhand - Breaking Celebrity News News Editor

Robert Pattinson didn't care for ex Kristen Stewart's choice of attire when she was photographed for the first time since news broke of her torrid affair with married director Rupert Sanders, Breaking Celebrity News is exclusively reporting.

Kristen, 22, was snapped in Los Angeles on Monday wearing a Baltimore Orioles cap backwards and a backpack -- both of which are Rob's -- as well as a gold ring on her finger that Rob had given her.

"Rob's not impressed by the photo of Kristen, and he's not sure what she's trying to prove," a source close to the situation exclusively told Breaking Celebrity News.

"He's been doing his best to push through this, promoting his movie and everything while still trying to figure out where he and Kristen stand. With these photos of her wearing his hat, backpack and ring, it's just got him wondering what kind of mind games she's playing."

As Breaking Celebrity News previously reported, Kristen has refused to discuss the intimate details of exactly what happened between her and the Snow White and the Huntsman director because she's scared of Rob's reaction and scared of the backlash from