{babes} Katy Perry and Eminem lead U.S. singles chart

NEW YORK (Billboard) – Katy Perry's "California Gurls" spent a fourth week at No. 1 on Billboard's Hot 100 singles chart Thursday, while Eminem's "Love the Way You Lie" debuted at No. 2.

The Eminem track, featuring Rihanna, comes from the rapper's new album "Recovery," which bowed at No. 1 on the album chart Wednesday.

The album's first single, the former chart-topper "Not Afraid," fell two to No. 11. Five other songs from "Recovery" debuted on the Hot 100: "No Love" (No. 23), "Won't Back Down" (No. 62), "Cold Wind Blows" (No. 71), "Talkin' 2 Myself" (No. 88) and "25 to Life" (No. 92).

The next four songs on the Hot 100 each fell one spot: Usher's "OMG," featuring will.i.am (No. 3), B.o.B's "Airplanes," featuring Hayley Williams (No. 4), Travie McCoy's "Billionaire," featuring Bruno Mars (No. 5) and Drake's "Find Your Love" (No. 6).

Mike Posner's introductory hit "Cooler Than Me" rose one to No. 7, while Ke$ha's "Your Love Is My Drug" (No. 8) and Lady Gaga's "Alejandro" (No. 9) each fell two. Jason Derulo notched a third top-10 from his self-titled debut album, as "Ridin' Solo" soared six places to No. 10.

Other new entries included Selena Gomez & the Scene's "Round & Round" (No. 24), Maroon 5's "Misery" at No. 44, Sara Bareilles "King of Anything" (No. 59), Miley Cyrus' "Stay" (No. 75) and Adam Lambert's "If I Had You" (No. 94).