Related: Jennie Garth reveals ex-husband Peter Facinelli took her and family in amid the L.A. wildfires: 'So grateful' Garth appeared on the ABC dance competition on season 5, all the way back in ...

Peter Facinelli and Jennie Garth's third daughter ... on Instagram of 17-year-old Fiona's dress and overall look for the dance as the high school junior headed out for the night.