Brooks & Dunn and Reba McEntire are staying in Sin City a little longer. They’re extending their residency at the Colosseum at Caesars Palace. The trio will perform nine additional shows together in July. Tickets for the new dates will go on sale March 11th at 1 p.m. Eastern. Since their residency got under way last summer, the longtime friends have played to more than 75-thousand fans in 18 sold out shows.