DC Comics is celebrating a quarter century of Harley Quinn with a new hardcover.

Harley Quinn: A Celebration of 25 Years collects writing by Paul Dini, Karl Kesel, Amanda Conner, Jimmy Palmiotti, and Rob Williams; and art by Bruce Timm, Jim Lee, Terry Dodson, Amanda Conner, and many more. The 400-page full color hardcover will be available September 13. MSRP is $39.99.

Harley Quinn is the creation of Paul Dini and Bruce Timm. She made her first appearance in Batman: The Animated Series in September 1992 and made the leap to comics a year later in The Batman Adventures #12. Since, she has become a fan favorite character and is currently headlining one of DC’s top selling titles (see “Top 10 Superhero Franchises--Fall 2016”).