Subscribe | UPI Odd Newsletter Subscribe MADISON, Wis., Nov. 9 (UPI) -- The Corduroy Club ruled them out as "messiahs of corduroy," but two Wisconsin twin sisters say they will celebrate their 11th birthday on Nov. 11 in a big way. Betsy and Katie Overman of Madison, aspired to lead a Nov. 11 celebratory procession by the Corduroy Appreciation Club of New York City, which says Nov. 11, 2011, is the date that "most closely resembles corduroy," Madison's Wisconsin State Journal reported Wednesday. The twins were turned down for geographic reasons. Advertisement Instead, the girls have been promised a trip to the Mall of America in Bloomington, Minn., by their mother and have some other ideas of how to spend their day. "If we go to school, we'll stay for 11 minutes," Betsy said. "Or they may count down on the school clock to 11 minutes after 11," Katie said. The two were born 17 minutes apart Nov. 11, 2000, but mother Julie Overman says she was only expecting one baby. She said she heard someone in the delivery room say, "I think there's another baby in there," after Katie was born. The Corduroy Appreciate Club has scheduled "11 Days of Corduroy," in honor of the 11/11/11 date and has urged its members to participate in anti-velour activities. Advertisement Read More Twins give birth on same day Twins switched for $50K hockey shot Graduating class has 23 twins, triplets