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Watch Justin Bieber Throw A Fan The Quinceañera Of Her Dreams

The Biebs' latest good deed will give you all the feels.

A Justin Bieber fan had the ultimate quinceañera -- thrown by the Biebs himself.

Bieber appeared on Tuesday night's episode of the Fox show "Knock Knock Live" to surprise a fan named Ashley. In a video on Fox’s YouTube channel, Ashley’s mom explained that her daughter was diagnosed with meningitis last year and couldn’t have her quinceañera because of the illness -- though she had been planning it for years. So, the superfan's favorite singer threw one for her.

Bieber surprised Ashley at her house with multiple dresses and told her to pick her favorite. Then the singer whisked her away to her surprise quinceañera and danced with her to his song "Pray."

A photo posted by Justin Bieber (@justinbieber) on

A beautiful moment. #KnockKnockLive pic.twitter.com/aqgklVFUXw

— Knock Knock Live (@KnockKnockFOX) July 29, 2015

"I listened to that song over and over in the hospital," Ashley said in the video. "It’s so inspirational."

Bieber kept the happy tears flowing on Tuesday night's episode when he surprised a father and his son who has Down syndrome with a $50,000 check to help with their financial issues. The show, which is hosted by Ryan Seacrest, made an impact on the singer as well.

Something really special happened to me on #KnockKnockLive this Tuesday. Thanks @RyanSeacrest

— Justin Bieber (@justinbieber) July 26, 2015

No better feeling than giving back

— Justin Bieber (@justinbieber) July 28, 2015

For Ashley, her special night with the Biebs was "like a fairy tale come true," she said.

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