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An eight-year-old Ohio girl has a heartfelt request of her troubled "idol" Justin Bieber: grow up.

Serafina, a second grader at Buckeye Central Elementary in New Washington, Ohio, wrote an open letter to Bieber. Her mother told FOX411 that Serafina has been a Belieber since the age of three, and started crying when she heard her mother and big brother talking about Bieber’s arrest for drunk driving.

“I used his arrest as an opportunity to talk to her about good and bad choices,” Serafina’s mom Ami told us.

Her daughter’s passion is writing, so Serafina asked her mom if she could write Bieber a letter. Ami thought it was a great idea, and told us she hopes her daughter’s letter might actually help the 19-year-old singer.

“I am hoping that Justin Bieber will somehow see or hear this,” she said.

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Here's her letter:

Dear Justin Bieber,

I'm very disappointed. It breaks my heart that you were in jail for just one night. I loved most of your songs. I dance to them a lot! So many things have changed this year. This is the biggest one yet! Why did you do it? Why did you race cars? What made you do it? Didn't you know it was a bad thing to do?

You had such a great life! I've read your books and watched your movies. You had something special. But you gave it up for drugs. My whole life I have been warned about drugs! And now my idol has started taking them! There are many drunk people in the world and you have become one of them. That's sad to me! I think you should be disappointed in your self. Just take a minute to think about what you did.

Sincerely,
Serafina
Age 8
Ohio, USA