This year's big Grammy winner will be headlining this year's Lollapalooza.

Mumford & Sons , whose album Babel won Album of the Year last month at the Grammy Awards, will headline the Chicago festival this august, along with The Killers , Phoenix and Vampire Weekend , according to the Chicago Tribune .

The newspaper further reports that Postal Service -- consisting of Death Cab for Cutie frontman Ben Gibbard and electronic artist Jimmy Tamborello -- and The National are also on the bill.

Billboard recently reported that Nine Inch Nails will take part in Lollapalooza, which will be held August 2-4.

An official announcement from Lollapalooza organizers isn't expected until next month.

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