5 books in series

Dukes Behaving Badly

Dukes Behaving Badly is a 7-book series with 5 released primary works first released in 2014 with contributions by Megan Frampton, Lisa Kleypas, Lorraine Heath, and Vivienne Lorret.

The Duke's Guide to Correct Behavior
When Good Earls Go Bad
Put Up Your Duke
A Christmas to Remember
One-Eyed Dukes Are Wild
Why Do Dukes Fall in Love?
My Fair Duchess