The 2015 ACM Awards are only a day past, but details are already emerging for next year's ACM Party for a Cause.

The annual event, which benefits ACM Lifting Lives, promises to be the biggest one ever, with a star-studded lineup scheduled over three activity-packed days. Carrie Underwood, Dierks Bentley and Kenny Chesney will co-headline next year's Party for a Cause, which will be held April 1-3, 2016. ACM Awards co-host Blake Shelton revealed the headliners' names and the addition of a third day during Sunday (April 19)'s ceremony broadcast.

ACM Lifting Lives has given more than $6 million since 2008 to over 150 different charitable causes. This year's ACM Party for a Cause featured more than two dozen artists, including Bentley, Miranda Lambert, Sam HuntClint Black, Luke Bryan, Chesney, Patty Loveless, Ronnie Milsap, Darius Rucker, Dwight Yoakam, Alabama, the Eli Young Band, Florida Georgia Line and others.

Other events supporting ACM Lifting Lives during the 2015 ACM Awards included a benefit gala hosted by Garth Brooks and Trisha Yearwood; the ACM Lifting Lives Celebrity Golf Classic hosted by Rucker; and the ACM Charity Motorcycle Ride and Concert, hosted by Bentley.

More artists will be announced for the 2016 ACM Party for a Cause in the coming months. The event will be held at the MGM Festival Grounds in Las Vegas. Tickets will go on sale on April 27 through Ticketmaster.

Bryan was crowned the 2015 ACM Awards' biggest winner, Entertainer of the Year. Lambert walked away with three trophies, for Album of the Year (for Platinum), Song of the Year (for "Automatic") and Female Vocalist of the Year. See a complete list of 2015 ACM Awards winners here.

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