The Thunderbirds W21s will play Epping FC in the grand final of the Football NSW Champion of Champions at 1.30pm Sunday at Valentine Park.

It is the second successive year that Thirroul has played Epping in the W21s decider and the players are confident they can become the club's first senior women's team to win a state title.

The path to the final has been similar to last year, with the Thunderbirds coming from behind to level the scores against Gymea United in the quarter final before winning a dramatic penalty shootout and last week downing Penrith FC 5-0 in the semi-final at Marconi Stadium.

Eight of the squad who will take the field on Sunday played in last year's Champion of Champions and the team is again coached by John Cropper, with assistance from Brad Walter, Amy Ziebell, Tina Siskoska and Corey Haines-Gross.

A big thanks to Lin Hampton for filming all the Thunderbirds games in the Champion of Champions - and some of Lin's footage was used in Thursday night's WIN TV report.

The team also received a mention in the Illawarra Mercury - along with Albion Park, who are playing in the All Age Women's final.

Thirroul W21s and Albion Park are the only teams from Football South Coast to qualify for this season's Champion of Champions grand finals.