The NSW Waratahs have piled on eight tries to win a record fifth Super Rugby Women's crown with a 50-14 final rout of two-time defending champions, the Fijian Drua.

Fittingly, prolific wingers Desiree Miller, with a try-scoring hat-trick, and Maya Stewart, with a double, were front and centre as the Waratahs capped their dominant undefeated season at Ballymore in Brisbane on Sunday.

The comprehensive eight-tries-to-two victory atoned for a shattering semifinal loss to the Drua last year, a defeat that has driven the Waratahs all season.

It is the Waratahs' first premiership since 2021.

The result was only ever in doubt for a few minutes early in the second half after the Waratahs made a lightning start to the match.

An early penalty try and five-pointers to Miller and Stewart had the favourites up 17-0 inside almost as many minutes.

The Drua briefly threatened an unlikely comeback with two tries either side of half-time.

A penalty try and a five-pointer from winger Merewairita Neivosa — while Miller was in the sin-bin for a deliberate infringement — cut the deficit to five points.

But poor discipline cruelled the Drua as they were quickly reduced to 13 players, with five-eighth Jeniffer Ravutia and winger Adita Milinia both yellow-carded.

The Waratahs wasted little time cashing in on the player advantage, with Stewart and Miller both crossing again to give their side a 45-13 lead in the 69th minute.

Stewart's try was her competition-topping 13th of the season, while Miller's was her 11th of the Waratahs' campaign.

But, deservingly, classy outside centre and player-of-the-match Georgina Friedrichs — who had a hand in almost all of the Waratahs' tries — crossed herself to put the icing on the cake.

Lock Atasi Lafai completed the romp seven minutes from full-time.

AAP