Events in Westport today -- Thursday, Dec. 20

Muse:" 10 a.m.-4 p.m. Westport Arts Center, 51 Riverside Ave. http://bit.ly/STKUWV

"U.S. Postage Stamps by Westport Artists:" 10 a.m.-4 p.m. Westport Historical Society, 25 Avery Place. Exhibit with companion, "The Road to 06880: Colonial Era to Present." http://bit.ly/PWgkeM

Downtown 2020 Committee: noon Westport Town Hall. http://bit.ly/T8aOs5

Planning and Zoning Commission: 7 p.m. Town Hall. http://bit.ly/12q9beg

Youth Commission: 7:15 p.m. Town Hall. http://www.westportct.gov/index.aspx?page=745&recordid=2833

Princeton Nassoons: 8 p.m. Seabury Center, 45 Church Lane. Performance mixing a capella music and comedy by Princeton student group.