Title: My Favorite Mistake
Author: Georgina Bloomberg & Catherine Hapka
Genre: YA Fiction Contemporary
Stand-Alone or Series: Series
Summary(from Goodreads):Tommi, Zara, and Kate are all elite riders on the A Circuit. Tommi, the billionaire heiress, is training a young horse to prove she can make horses a real career. But when her new beau, Alex, convinces her to skip a horse show to party in the Hamptons, the results could be disastrous. Zara, the celebutante wild child, is finally taking her riding seriously. Until the new "nanny" her dad hires threatens to upstage Zara's party girl status. Then there's Kate. She doesn't have money to burn like the others, but she does have Fitz, the barn's resident hot guy. But when the pressure of being a working student builds, Kate's perfectionist tendencies threaten to get in the way of her relationship and her riding.
Readers who are growing out of the Canterwood Crest series or searching for an A-list fix have found just what they're looking for in the A Circuit series.