JOIN THE LARGEST GATHERING OF BACHELORETTE ALUMNI IN CELEBRATION OF THE MILESTONE 15TH SEASON OF 'THE BACHELORETTE,' ON 'THE BACHELORETTE REUNION: THE BIGGEST BACHELORETTE REUNION IN BACHELOR HISTORY EVER!,' A TWO-HOUR SPECIAL AIRING MONDAY, MAY 6, ON ABC

In anticipation of Hannah Brown's journey as the next Bachelorette, viewers will celebrate 15 seasons of romance with Chris Harrison as he hits the road in a double-decker bus with Bachelor Nation super fans, revisiting some of the most iconic date spots from "The Bachelor" and "The Bachelorette" history. The momentous occasion will culminate with a Bachelorette reunion like no other, with special surprises along the way, on "The Bachelorette Reunion: The Biggest Bachelorette Reunion in Bachelor History Ever!," a two-hour special airing MONDAY, MAY 6 (8:00-10:01 p.m. EDT), on The ABC Television Network, streaming and on demand.

What secrets will be spilled when former Bachelorettes - Trista Sutter, DeAnna Stagliano, Jillian Harris, Ali Fedotowsky-Manno, Ashley Rosenbaum, Emily Maynard Johnson, Desiree Siegfried, Andi Dorfman, Kaitlyn Bristowe, JoJo Fletcher, Rachel Lindsay and Becca Kufrin - reunite and reflect on their past, and what do the ladies have to say about Hannah Brown's upcoming journey?

The night of celebration also features an inside look at Rachel Lindsay and Bryan Abasolo's wedding preparations and intimate bridal shower, a look back at the most unforgettable "firsts" throughout the years, and a catch-up with some of the most controversial men in "The Bachelorette" history. Then, Chris Harrison takes a special trip to Hannah's hometown for an up-close and personal look at our newest Bachelorette. What skeletons will he uncover when he investigates her closet and bedroom?

This sentimental trip down memory lane concludes as we look ahead with an exclusive preview of the romance, tears and the promise of love as Hannah begins the search for her soul mate on the monumental 15th season of "The Bachelorette," premiering MONDAY, MAY 13 (8:00-10:01 p.m. EDT).

Hosted by Chris Harrison, "The Bachelorette Reunion: The Biggest Bachelorette Reunion in Bachelor History Ever!" is a production of Next Entertainment in association with Warner Horizon Unscripted Television. Mike Fleiss, Martin Hilton, Nicole Woods, Bennett Graebner and Susan House are the executive producers.