Perry's previous hit, "E.T." (featuring Kanye West), tops the 4 million mark in digital sales this week. It's her fifth song to reach that plateau. No other artist has taken five songs (or even four songs) to the 4 million mark. Perry's closest competitors are Lady Gaga and Rihanna, both of whom have had three 4 million-sellers.
What's more, Perry has been in the lead position on all five of her hits: "Hot N Cold" (4,915,000), "California Gurls" (with Snoop Dogg, 4,879,000), "Firework" (4,531,000) and "I Kissed A Girl" (4,067,000).
"E.T." is the second 4-million seller for West. His 2007 smash "Stronger" has sold 4,402,000 copies.
Yahoo! Chart Watch