4. KELLY ROWLAND

With Beyonce's new singles underperforming, the first six months of 2011 have been a prime time for Kelly Rowland to establish herself as major competition in the music industry. While we await what's in store for her as the year continues, she's already gotten it off to a promising start with her radio killer "Motivation," featuring Lil Wayne. In addition, she was chosen to serve as a judge on the popular British singing competition X Factor.