Photo: Will Hart/NBC/NBCU Photo Bank via Getty Images
It's heartbreaking to report that Avalanna Routh, whose Facebook campaign allowed her to spend a day with her idol Justin Bieber last Valentine's Day, has died of brain cancer on Wednesday at just 6 years old.
When Bieber heard wind of the campaign that garnered over 12,000 supporters, the pop star invited Routh and her family to spend the day with him in Manhattan for a special Valentine's Day date.
The girl, who called herself "Mrs. Bieber" having held her own adorable wedding to the singer, played board games with the star, kissed him on the cheek and even got to touch Bieber's headline-making hair.
Since her passing, "RIP Avalanna" has been trending on Twitter worldwide.
Bieber invited the peppy and courageous Routh back to New York for an appearance on the Today Show and brought her on stage with him at the Apollo Theater last June.
Routh was diagnosed with atypical teratoid rhabdoid tumor, a rare form of brain cancer that has only around 30 diagnoses in the U.S. each year.