It's on, Chicago.
Hillary Clinton and New Jersey Gov. Chris Christie are headlining former President Bill Clinton's annual Clinton Global Initiative meeting June 13-14 in the Windy City.
Though "speeding up the United States' economic recovery and the nation's long-term outlook" is the gathering's official, scheduled theme, the duo's appearance ensures 2016 presidential election buzz will officially be underway.
Clinton and Christie are among the top contenders within their parties for the highest seat in the country, and while speculation continues, why not start the battle in Chicago.
Bill Clinton reportedly said he is "thrilled" that his wife is participating in the event. It marks her first appearance at the Clinton Global Initiative meeting.
Christie, who once visited Illinois with the intent to lure away jobs, is one of two Republicans scheduled to appear at the gathering.
Chelsea Clinton, Mayor Rahm Emanuel, Eva Longoria and Treasury Secretary Jack Lew are among the other guests.