'OMG' is No. 1 on the U.S. record chart

LOS ANGELES, May 20 (UPI) -- Usher's "OMG" is No. 1 on the U.S. record chart this week, Billboard.com reported Thursday.

Coming in at No. 2 on the Billboard Hot 100 is Katy Perry's "California Gurls" featuring Snoop Dogg, followed by B.o.B's "Airplanes" featuring Hayley Williams at No. 3, B.o.B's "Nothin' On You" featuring Bruno Mars at No. 4 and Taio Cruz's "Break Your Heart" featuring Ludacris at No. 5.

Rounding out the top tier are Eminem's "Not Afraid" at No. 6, Ke$ha's "Your Love is My Drug" at No. 7, Lady Gaga's "Alejandro" at No. 8, Rihanna's "Rude Boy" at No. 9 and Train's "Hey, Soul Sister" at No. 10.