The chart-topping boy band will hit the road with Mario, Ying Yang Twins, Chingy and more.

The nostalgia train will keep on chugging along strong in 2019 thanks to a major reunion and tour coming from one of the early '00s most beloved boy bands.

Billboard can exclusively reveal that B2K is set to reunite for The Millennium Tour, which will hit the U.S. in March of next year and mark the first time the band has performed together in more than a decade. Made up of Omarion, Raz B, Boog (formerly J-Boog) and Fizz (formerly Lil' Fizz), the quartet will deliver hits like "Bump Bump Bump," "Gots Ta Be" and "Badaboom" in more than two dozen shows.

The band will be joined by fellow R&B and hip-hop mainstays of the decade in special guests Mario, Ying Yang Twins, Lloyd, Pretty Ricky and Chingy. The tour is produced by G-Squared Events in association with Omarion Worldwide, Hall of Fame Entertainment, and Blvd. Music.

Riding in alongside the Backstreet Boys and *NSYNC's TRL era, B2K (an acronym for Boys of the new Millennium) offered a stylish and edgy take on the boy band trend in their short but impactful time together.

From first breaking onto the charts in 2001, the guys earned four top 40 hits on the Billboard Hot 100, including their No. 1 single "Bump, Bump, Bump" with P. Diddy, and saw both of their studio albums enter the top 10 of the Billboard 200, with their self-titled debut also topping the Top R&B/Hip-Hop Albums chart. After their 2004 disbanding around the time their cult-favorite film You Got Served was released, the members embarked on solo careers with Omarion going on to two No. 1 albums on the Billboard 200 and a healthy string of hits like 2006's "Ice Box" and 2014's "Post to Be."

"We are excited to be a part of what will undeniably be a nostalgic and electrifying performance that will awaken cherished memories and create new, indelible ones for the next generation," Michelle Le Fleur, COO at Omarion Worldwide tells Billboard. "While admiring their solo successes, the fans have consistently demanded a B2K reunion and, with the determination of an incredibly talented team, that dream is now a reality."

"We’re thrilled to announce that the fans relentless petition for a reunion has not gone unheeded," adds Damuer H. Leffridge, managing partner at Blvd. Music. "Through collaborative efforts, B2K answered the call. The stage has been set, the journey continues, please get ready for the triumphant return of B2K."

The official tour schedule will be released at 9 a.m. ET on Dec. 31, 2018, with tickets on sale to the public Jan. 4, 2019 in some markets and in remaining markets on Jan. 11. Ticket info and further concert details are available at G-Squared Events.