Buzz Bites (9/1/10): Rihanna Responds To Taylor Momsen Diss

(Credit: Jamie McCarthy/WireImage)

+Rihanna reportedly got in touch with Taylor Momsen regarding The Pretty Reckless singer's digs at her, leading to a public apology from Momsen. (TheFabLife)

+ In other, less decisive Rihanna news, the "Rude Boy" singer can't seem to decide what the lead single from her upcoming album will be. (ThatGrapeJuice)

+ Lady Gaga will perform at a John Lennon tribute concert in Los Angeles next month. (MTV News)

+ Peep some video of Miley Cyrus and Justin Bieber's duet from Madison Square Garden last night. (Just Jared Jr.)

+ Read an interview with Bruno Mars, the man behind three of the year's breakout hits (Travie McCoy's "Billionaire," B.o.B's "Nothin' On You" and Cee-Lo's infectious diss track, "F*** You"). (Idolator)