All That Glitters / Diamond Girls Books in Order

All That Glitters, also known through later Diamond Girls editions and titles like Rock Hard and A Girl's Best Friend, is K.A. Linde's college sports romance corner. The series follows a connected group of young women whose friendships carry across stories even as each book shifts to a different romance. That shared friend group is what gives the series its identity.

The world blends campus life with a more glamorous edge. Coaches, quarterbacks, roommates, and even a rockstar all find their way into the mix, so the books move easily between sports romance, forbidden attraction, friends to lovers, and enemies to lovers territory. The setup stays youthful and fast moving, but there is still plenty of emotional drama under the sparkle.

Friendship matters here. Even when a book is centered on one couple, the women around that romance are part of the appeal. The series feels less like isolated love stories and more like watching a circle of friends figure out who they are, who they trust, and what kind of relationships they actually want.

There is a lot of energy in these books. The settings are social, the characters are young enough to make bold mistakes, and the emotional stakes often get tangled up with ambition, image, and the pressure of being watched. That gives the series a lively, slightly chaotic feel that suits the age of the characters.

If you like new adult romance with sports, friendship, and a touch of glamour, this is a fun K.A. Linde series to explore, especially if you enjoy connected couples with different tropes from book to book.