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4-year-old girl battling brain cancer meets Justin Bieber

Justin Bieber poses with Hailey Roser in Milwaukee, Wis., on Sunday, Oct. 21, 2012. (Twitter.com/HealingHailey)

October 22, 2012 12:00:00 AM PDT
A 4-year-old Wisconsin girl fighting brain cancer almost missed the opportunity to meet her hero, Justin Bieber.

A radio station gave Hailey Roser tickets to Bieber's concert in Milwaukee on Sunday. But she almost missed the event due to a deadly shooting at a nearby spa that locked down the hospital.

Fortunately, the lockdown was lifted in time for an ambulance to take Hailey to the concert, where she met her favorite pop star backstage.