Watch: Selena Gomez in tears for Christina Grimmie on stage

Selena Gomez paid tribute to her slain friend Christina Grimmie during a concert in Miami Friday night. Fighting back tears, Gomez told concert-goers at American Airlines Arena, "One thing about Christina and her family is that she holds her faith so closely to her," Gomez said of the former "The Voice" singer, who was gunned down by a man following a concert in Orlando Thursday.