Ellyse Perry says the Sydney Sixers are hungrier than ever to win their third Rebel WBBL title, as the Brisbane Heat look to unlock the blueprint to stopping the magenta juggernaut.

Perry's Sixers are in an incredible fourth WBBL decider from as many seasons and have a three-peat in their sights as they prepare to meet the Heat at Drummoyne Oval on Saturday.

Winning silverware is hardly a novelty for the Sixers team with many of their players also part of the NSW Breakers team which has won 19 of 22 domestic 50-over titles but Perry said they had no problems motivating themselves to claim yet another title.

"It's not hard at all," Perry said in Sydney on Friday. "(The WBBL) and women's cricket is developing so quickly each year, the challenge for us and for every team that you want to play better each year.

"At the moment that's been our huge motivating factor, to be a better team than last year in terms of the style of play we're putting out there, the amount of people who are interested in following us and what we do to engage fans on and off the field."

Perry said there was a good amount of nerves in her squad, with this year's final the first they'll have played in front of a home crowd. In previous seasons, the finals were played as double-headers alongside the KFC BBL finals, hosted by the top-ranked men's teams.

"Nerves aren't a bad thing, sometimes there's a connotation they're not a good thing but I think they're a great thing," Perry said.

"It's the reason why you play and from my point of view our group is incredibly proud to have another chance to make a go at the final and we just want to enjoy it."

Honours were split between the teams during the regular season, with a Perry century leading the Sixers to an 11-run victory at the SCG before the Heat turned the tables a day later, bowling their Sydney rivals out for 88 at Hurstville Oval.

"It was nice to split those games with them, they're a quality outfit everybody knows that," Heat captain Kirby Short said on Friday.

"There's a reason they're playing for their third title in a row.

"It's nice to know your best is good enough against this team and that's a nice thing that sits in the pit of your stomach, but equally in big games all bets are off and it just depends on who shows up on the day.

"What it does give us is we know the plans we had when executed were the right ones."

Drummoyne Oval is on track to be sold out for Saturday's decider, which kicks off at 10.10am local time.

A bumper crowd of more than 3367 people turned out for the semi-finals last weekend, but the gates at Drummoyne could be locked on Saturday with as many as 5000 expected to turn out for the decider.

"It'd be amazing, it's a great place to come and watch cricket," Perry said. "We had a really good crowd last week and if we got even more people this week, the atmosphere plays a huge role and just pushing us along to play really good cricket and put on a really good show.

"We'd love to have as many as possible."