Dunne, a 21-year-old LSU gymnastics standout, prepared for gameday with her teammates at a private tailgate party.
The bulk of Livvy's teammates gathered around her for a team shot at the LSU gymnastics training facility.
Elena Arenas, whose photos "should be illegal" according to admirers, Aleah Finnegan, and others were included in the photo.
Dunne posed alone in another Instagram story, exhibiting her clothing for the day.
She was dressed in a white zip-up suit with silver boots.
"Happy game day," Dunne tweeted, along with a purple heart and a tiger emoji.
The No. 22 rated LSU Tigers football team defeated its rivals, the Auburn Tigers, 48-18 on Saturday.
Quarterback Jayden Daniels led the squad with 325 yards and three touchdown passes.