"Just the Girl" debuted at number 83 on the Billboard Hot 100 the week of July 30, 2005. Two weeks later, it moved sixteen spots from number 68 to number 52 the week of August 13, 2005. It reached the top 40 on the week of August 20, 2005, moving thirty-one spots to number 21. It peaked at number 11 the week of September 3, 2005 and stayed there for two weeks, remaining on the chart for twenty weeks.
Directed by Paul Hunter and Vem Miller (aka Vem of Vem & Troy), the video features the band arriving on the roof of a high school via helicopter, with the students passing a note saying that the band is performing on said roof and leaving their classrooms to watch them perform. Then-couple Christopher Knight and Adrianne Curry appear in the video.