 On May 9, 2009, the song peaked at number nineteen on the "Billboard" Hot 100, making "Circus" the first Spears album to have three top twenty hits since her 1999 debut, "...Baby One More Time".As of March 2015, "If U Seek Amy" has sold 1.3 million digital downloads in the United States according to Nielsen SoundScan.It is her tenth best-selling digital single in the country.