Britney gets her Fifth #1 single in the US

Britney Spears has obtained her fifth number-one single in the United States of America, as the remixed vesion of Rihanna's S&M (where Brit features) reached the #1 position this week on Billboard (US Charts)

Listed as featured artist on “S&M,” Britney earns her fifth Hot 100 No. 1 and second this year, following her own “Hold It Against Me” in January. She had previously reigned with her debut single “…Baby One More Time” in 1999 and returned to the summit with “Womanizer” (2008) and “3″ (2009).