Bieber Tops Billboard Charts, Naomi Campbell Joins Reality Show

Justin Bieber has become the youngest artist to land five chart-topping albums in the U.S. The 18-year old's latest record, "Believe Acoustic," debuted atop the Billboard 200 chart, selling 211,000 copies in its first week. The album also topped iTunes downloads charts in 63 countries. Bieber is now one of only nine artists in Billboard history to have a number one album for four consecutive years.