INDIANAPOLIS (WOWO): Indiana State Fair officials have announced the four headline acts for this year's concert lineup during the fair. Famous for her hit, “All About That Bass,” Meghan Trainor will kick off the series on August 11th. Other acts include Garrison Keillor, Gabriel Iglesias, and Jake Owen, performing August 12th-14th. Tickets for all four shows will go on sale this Friday, April 17 at 10 a.m. to the general public. For more information, visit www.indianastatefair.com.