Kristen Stewart and Robert Pattinson
Kristen Stewart and Robert Pattinson
Pattinson Stewart
Robert Pattinson and Kristen Stewart before their separation. [Reuters]

Twilight star Kristen Stewart has ended her self-imposed exile by appearing in public wearing a Baltimore Orioles baseball cap and backpack - both of which belonged to her ex-boyfriend and Twilight co-star Robert Pattinson.

Stewart also wore a gold ring which was given to her by Pattinson, who ended their four-year relationship in July following revelations that she had cheated on him with director Rupert Sanders.

A source close to the pair told Radar Online that Pattinson reacted angrily to seeing his former girlfriend wearing his clothes.

The source said: "Rob's not impressed by the photo of Kristen, and he's not sure what she's trying to prove.

"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."

According to Radar's sources, Stewart has repeatedly tried to contact Pattinson, but he is not interested in what she wants to say, leading Stewart to take desperate measures.

"Kristen's been consistently texting and calling Rob and he hasn't really wanted to listen to how sorry she is or hear any excuses," the source said.

"So by Kristen wearing his stuff, he just feels like it was another way for her to reach out to him."

During his estrangement from Stewart, Pattinson has been actively promoting his movie Cosmopolis. In his latest promotional appearance, on the Jimmy Kimmel show, Pattinson admitted that he has now moved out of the home he shared with Stewart.

When Kimmel told Pattinson that the last time he interviewed him, he was homeless, the Twilight star said he still is.

"I still am. No, I rented this archway and I just live behind it. In one of those trash cans," Pattinson jokingly said.

Friends of Pattinson claim the London-born actor is finding it difficult to move on following news of Stewart's affair with Sanders.

"Even if he were ready to move on, Kristen's not making it easy," an insider told OK magazine.

"She's not ready to let him go. Kristen's been consistently texting and calling Rob and he hasn't really wanted to listen to how sorry she is or hear any excuses. 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. "