Need web sites that tell HOW MANY books have been written about Ariana Grande.?

Answer 1

Amazon shows several thousand, but most appear to be song books, sheet music, and general merchandise like coloring books and journals with her photos, etc.

As for actual books about her, I found  "Ariana: The Biography" by Danny White,"Ariana Grande: Break Free" by Katy Sprinkel, "Ariana Grande: Biography, Facts, Quotes And Pictures" by Tom Cannon, "Ultimate Superstars: Ariana Grande" by Liz Gogerly, "Ariana Grande: Famous Actress & Singer" by Sarah Tieck, and "Ariana Grande 100% Unofficial" by Malcom Mackenzie.

Answer 2

If there's been one single book written about her that would be one too many. 

Answer 3

Neither her own website nor her wikipedia entry list any books about her, although Wikipedia has a long list of references to her in the press'

Answer 4

Try Google  or Google books.