An Adelaide native, born 29 August 1966, Georgina studied at Seymour College and at the Magill campus of the South Australian College of Advanced Education (now a part of the University of South Australia). She graduated in 1987 and joined Nine News as a reporter.
Just a year later she was appointed weekend news anchor, which job she continued to 2011, along with filing special reports. In 2002, she was the anchor of the short lived local version of A Current Affair. Until 2007 Georgina was also the co-anchor of the annual Adelaide Christmas Pageant telecast which airs in early November each year.
In October 2011, it was announced that McGuinness would not have her contract renewed with the Nine Network.
In early 2012 McGuinness joined the staff of South Australian Opposition Leader Isobel Redmond as a speechwriter.
