The couple will wed in a 5 p.m. ceremony on Sept. 14 on the Ocoee River.
The bride-elect is the granddaughter of Charles and Maurene Bohannon and Alvin and Virginia Knox, all of Chickamauga. She is the sister of Hunter Knox and Drew Knox.
Miss Knox is a graduate of Ridgeland High School in Georgia and Regency Beauty Institute. She is employed by Petco.
Mr. McTaggart is the grandson of James and Linda Burris of Old Fort and James and Judy McTaggart of Benton.
A graduate of Polk County High School and Tennessee Technology Center, he is employed by Home Depot.