Justin Bieber visits Edmonton teen with cancer

A campaign on Twitter convinced pop sensation Justin Bieber to pay a visit to an Edmonton teenager who is fighting bone cancer.

Teen's friends used Twitter to get pop star's attention

Justin Bieber visited Edmonton teen Crystal Montgomery at the Cross Cancer Institute on Monday. (Instagram)

A campaign on Twitter convinced pop sensation Justin Bieber to pay a visit to an Edmonton teenager who is fighting bone cancer.

Bieber visited 18-year-old Crystal Montgomery at the Cross Cancer Clinic hours before his sold-out concert at Rexall Place.

The pop star subsequently tweeted an Instagram photo of himself with the young woman, using #bieberforcrystal, the hashtag created by her friends for their campaign.

Bieber, 18, has been seen at a number of spots in Edmonton, including the Blue Plate Diner, since Saturday.