Along with U2, Lady Gaga and Usher, country singer Kenny Chesney is set to perform at the Hollywood Bowl concert on the 15th. The concert is being held to honor the 10th anniversary of Bill Clinton's charity, the The William J. Clinton Foundation.

Clinton's daughter Chelsea and her new husband will also be there, but oddly absent from the list of attendees is Hillary, according to The Hollywood Reporter.

We phoned the State Dept. to confirm whether Hillary will be there. A spokesperson said her schedule for that day likely won't be set until a week before.