Young Justin Bieber fan Avalanna Routh dies from brain cancer at age 6

The 6-year-old girl who stole Justin Bieber’s heart died from brain cancer early Wednesday.
Avalanna Routh, aka “Mrs. Bieber,” was adored nationwide for her brave struggle with a rare and incurable cancer called AT/RT — and her unending love for the teen pop star.  
“Our darling Avalanna went to Heaven this morning,” her family wrote on Twitter. “Oh Avalanna, the brightest star — you took our hearts with you, our greatest love.”
Avalanna, from Merrimac, Mass., hit headlines in February when she got the gift of a lifetime — a date with her beloved idol.
INSIDE AVALANNA'S DATE WITH JUSTIN BIEBER
Bieber learned about the young girl after her family started a “Get Avalanna to Meet Justin Bieber” campaign on Facebook and Twitter, using the hashtag, #MrsBieber. Avalanna was so infatuated with the singer her nurses once organized a pretend wedding, where Avalanna “married” a cardboard cutout of Bieber.
Bieber flew his cancer-stricken fan and her mother to New York for an early Valentine’s Day date, where they played board games and snacked on cupcakes and candy. He later tweeted the date was “one of the best things I have ever done.”
Dr. Charles Robert of the Dana-Farber Cancer Institute told The Associated Press Avalanna was diagnosed with cancer when she was 18 months old.  
“[She] responded to initial treatment for quite a while, but the cancer kept coming back and ultimately she was no longer responsive.”
AT/RT affects the brain and spinal cord and usually occurs in young children. There are only about 30 new cases a year, Robert said.  
The cancer institute called Avalanna a “very courageous young person who lived her life with grace and determination.”