copies. As the date, the song is her third best selling digital single with 890,000 copies sold. On the Hot Digital Songs chart, "A Public Affair" climbed from number 16 to six in its fifth week on the chart, seeing a 100% increase in digital download sales of 58,000 units sold. The single became her second-highest peak position on the chart after "These Boots Are Made for Walkin'" (2005). With this entry, "A Public Affair" joined Ashlee Simpson's song "Invisible" in the top ten on the US iTunes Store's list of most popular songs, the first time in iTunes history that two siblings had different songs in the top 10. "A Public Affair" was a successful on the club charts. On Hot Dance Club Play chart, the single peaked at number one by October 7, 2006. It was her first number one on the chart. The song also peaked at number six on the Hot Dance Airplay chart. In Canada, "A Public Affair" became Simpson's third top ten single after "Take My Breath Away" (2004), peaking at number eight by July 2006, due its strong digital sales. Oceania and Europe In Australia, the single debuted at number 18 on the ARIA Charts for the week of August 13, 2006. The next week, it peaked at number 17 and stayed on the chart for ten weeks. The single became her seventh top 20 single in that country. "A Public Affair" was released in Europe by early 2007. In Sweden, the single made its chart debut on the issue dated January 4, 2007, at number 43. The next week peaked at number 36. In Ireland, the song debuted at number nine on the issue date February 8, 2007. It was her second highest peak in that country after "These Boots Are Made for Walkin'" (2005). In the United Kingdom, the song debuted at number 20 on the issue dated February 17, 2007. The single stayed on the chart for four weeks. It became her sixth and last top 20 there. Outside the United Kingdom, "A Public Affair" has also charted in other European countries including Czech Republic, Hungary, Romania and Germany. Music video The song's music video was shot on June 23, 2006, and the late evening of June 24, 2006, at the Moonlight Rollerway in Glendale, California. It features appearances by Christina Applegate, Christina Milian, Eva Longoria, Maria Menounos, Andy Dick