Chelsea Nelson of Exira was crowned 2011 fair queen in front of the grandstand at the Audubon County Fair Thursday night.  Chelsea is the daughter of Dave and Trudy Nelson.  She will be a freshman at Iowa State University this fall.  Chelsea will also represent Audubon County in the state fair queen competition at the Iowa State Fair from August 9th through the 13th.  Amanda Steffes of Audubon was named as the runner-up.  Amanda is the daughter of Bruce and Deb Steffes.  She will be a senior at Audubon High School this fall.    2010 Audubon County Fair Queen Hallie Christofferson was also in attendance to help with the ceremony.