London: Actor Robert Pattinson, who is in a serious relationship with his "Twilight" co-star Kristen Stewart, is being pursued by singer Katy Perry.
The 27-year-old singer, who last year split from husband Russell Brand, apparently tried to talk to Pattinson while he was having drinks with his girlfriend Stewart at the Chateau Marmont hotel in Los Angeles.
"As soon as Kristen went to the toilet, Katy made a beeline to flirt with Rob. Kristen was annoyed," a source said.