Here is a list of actors and actresses who i imagine playing the characters in this book if it was a tv show or a movie.
If you don't know who they are here's what they all look like.

Just to let everyone know this book was made way before Demi changed pronouns and I will continue doing what I have been working on so please DO NOT attack me over it! & this book is 100% fictional and has nothing to do anyone's real life!

Olivia Benson is a character from the show law and order svu all rights go to law and order and their creators. she plays in a fictional police force that is something similar to SVU but it's not.
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Demi Lovato as herself (singer)  (side note : I know that Demi is non binary in real life but  this story is created before Demi changed  pronouns)

Pierson Fode as Darryl Jepsen Lovato (actor)
Mia Talerico as Leah Ann Lovato (actress)
Rowan Blanchard as Alyssa Rose Lovato (actress)
Sirah as herself (singer/ rapper)
Matthew Scott Montgomery as himself (actor)
Selena Gomez as herself (singer/ actress)
Olivia Holt as Marissa (actress / singer)
Dianna De La Garza as herself
Dallas Lovato as herself (actress)
Madison De La Garza as herself (actress)
Mariska Hargitay as Detective Olivia Benson (actress)
Nick Jonas as himself (singer/ actor)
Janel Parrish as Vanessa (actress)
Ella Henderson as Ella Wilson (singer)
Cole Sprouse as Mark Wilson (actor)  - picture not shown in bottom
Tom Hanks as LAPD captain (actor)
Luke Benward as James Jepsen (actor)
Bridgit Mendler as Holly Norman (singer/ actress)
Reba Mcentire as Susan Jepsen (singer / actress)
Scott Bakula as Jon Jepsen (actor)
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Here are the pictures of the actors and actresses

Demi Lovato

Pierson Fode

Mia Talerico

Rowan Blanchard
( I know the picture is a little older but this is who she looks like in real life ! )

Sirah

Matthew Scott Montgomery

Selena Gomez

Olivia Holt

Dianna De La Garza

Dallas Lovato

Madison De La Garza

Mariska Hargitay

Nick Jonas

Janel Parrish

Ella Henderson

Tom Hanks

Luke Benward

Bridgit Mendler

Reba Mcentire

Scott Bakula

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I hope this helps you all figure out who they are or have a idea who they are and what they look like. 

Thank you guys for the amazing support you guys are the best and I hope you guys have a great day and please be safe through these crazy times!