Just three days after topping Beyonce’s “Single Ladies” in the United States, Lady Gaga has topped reining chart topper and X-Factor winner Alexandra Burke’s “Hallelujah” ! According to the Official Charts Company, Lady Gaga’s single “Just Dance” featuring Colby O’Donis hit no.1 Sunday. “Broken Strings” by James Morrison and Nelly Furtado moved into second spot, while X Factor winner Alexandra Burke’s “Hallellujah” slipped to 1-3. U.S. rockers Kings of Leon knocked boy band veterans Take That’s “The Circus” off top spot of the album charts with “Only by the Night,” the No. 3 seller of 2008 in Britain. Duffy’s “Rockferry” was steady at No. 3.