Source: Kevin Mazur/ The Black Promoters Collective Brandy & Monica may not have brought out any special guests at the Houston stop of their co-headlining tour, The Boy Is Mine, but their back-to-back hits were more than enough to keep the sold-out crowd ruckusly roaring with 90's nostalgia. The popular tour rolled into Houston's Toyota Center on Dec. 7, and the H-town fans made sure to let the two legends know they were appreciated.