Books like Diary of a Teenage Girl
Melody Carlson
Diary of a Teenage Girl is 248 pages, about 4 hours 33 minutes at 250 words a minute.
12 books to read next
How long each takes
Eclipse 11.5 h 
Keeping You a Secret 4.6 h 
Sleeping Freshmen Never Lie 5.3 h Dork Diaries Collection 18.2 h 
Why Am I Afraid to Tell You Who I Am? 3.1 h 
Prey 3.8 h 
Playing Games 2.7 h 
Boundaries 6.5 h 
Smile 3.9 h 
Stargirl 3.5 h 
My Hero Academia, Vol. 1 3.5 h 
The New Diary 5.9 h Bar height shows length. Estimated at 250 words a minute.