Mr. and Mrs. Steven Wier of Jackson have announced the birth of their twin daughter and son, Caroline Lindsey Wier and Carter Ewing Wier, who were born Nov. 6, 2007, at River Oaks Hospital in Jackson. Caroline weighed 6 pounds, 15 ounces, and was 20 inches long. Carter weighed 6 pounds, 14 ounces, and was 20 1/2 inches long.