|Photo: Courtesy of Jive Records|
After ceding the top spot to Katy Perry's "Firework" last week, Bruno Mars' hit "Grenade" is back at #1 on the Billboard Hot 100, but he shouldn't get too comfortable up there. Billboard reports that Britney Spears' new single, "Hold It Against Me," is set to blast into the chart next week, thanks to huge airplay and projected first-week sales of over 400 thousand downloads. If the song does enter the chart at #1, it'll be Brit's second to do so. Her first was the track "3," back in October of 2009.