The region’s Republican Central Committees have announced that they are jointly holding a picnic in September that will feature the Osmond Brothers.

The Osmonds will headline the gathering on Sunday, September 21 from 2 p.m. to 9:30 p.m. at the Jefferson Barracks Veteran’s Memorial Amphitheater in south St. Louis County.

According to the announcement, picnickers also will be entertained by the local country group Pearl Heart, which made the finals of this year’s NBC hit show “Nashville Star.”

U.S. Rep. Kenny Hulshof, the state GOP’s nominee for governor, and the rest of the party’s statewide ticket has been invited.

So is the party’s presumptive nominee for president, Sen. John McCain, although the announcement doesn’t indicate that he has RSVPed.

St. Louis County Councilman John Campisi is to serve as the picnic’s Master of Ceremonies.

Says the announcement: “The picnic features free admission, parking and entertainment with food, beverages, arcade games and GOP merchandise available.  The event will end with a fireworks display from Twilight Fire and Illusions.

“While admission is free, pre-registration is required.  To register, people can call 636-947-4911 or go online at www.stlcountygop.org.”