Los Angeles: Singer Justin Bieber has taunted singer Taylor Swift over social media by sharing a photograph of himself on a video call with Swift's former boyfriend Calvin Harris and rapper Kanye West. The 22-year-old singer posted the image on Instagram, reports femalefirst.co.uk. "Taylor swift what up," Bieber wrote alongside the image. Both Harris and West are smiling in the photograph. Swift reportedly was not impressed with Bieber's on and off relationship with her best friend Selena Gomez from 2011 to 2014 and it has been claimed that she urged Gomez to dump him. West has been involved in a huge public spat with Swift over his controversial single "Famous", after she claimed she didn't give him permission to sing about her. However, his wife Kim Kardashian West decided to leak a series of videos on Snapchat which featured the rapper on the phone to Swift discussing the controversial lyrics and she appeared to give it the go-ahead.