Chris Brown and Usher's co-headlining "R&B Tour" has crossed $101.9 million in gross ticket sales from 566,043 tickets across its first 13 sold-out stops since launching June 26 in Denver, according to iHeartRadio and Pollstar.

Riding that momentum, the tour just announced additional dates, with tickets going on presale August 20 and general sale August 24. The run is now scheduled to continue through December 12 in Tampa, extending what's already shaping up as one of the year's biggest R&B tours.