These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Hollywood Homely: Jess believes she is ugly because she has an A cup (at fifteen) and her arse is too big. On the cover of each book, she looks fine.
Les Yay: In Girl, Fifteen, Charming But Insane, the hidden bathroom camera catches two female best friends making out or "snogging" in the bathroom. This causes Jess to (very briefly) consider her own friendship with Flora, long enough to differentiate it from a Romantic Two-Girl Friendship.
Wangst: This book has too many "my life is over" moments to count.