Kris Kross formed in the early 1990s, consisting of James Christopher "Mac Daddy" Kelly (August 11, 1978 – May 1, 2013) and Christopher "Daddy Mac" Smith (born January 10, 1979). The duo hit worldwide status with the smash 1992 "Jump", which was No. 1 on the Billboard Hot 100 for eight weeks and certified double platinum as a single. The duo followed up with many more platinum, gold singles and albums such as "Warm It Up", "Tonight's tha Night" and "Young, Rich & Dangerous". Kris Kross was also noted for their fashion style, which consisted of wearing their clothing backwards. James Christopher Kelly and Christopher Smith's friendship began in first grade. The duo was discovered at an Atlanta shopping mall in 1991 by then 19-year-old Jermaine Dupri.