The Brisbane Heat will be looking to lift their maiden WBBL title while the Sixers will be hoping they can do a three-peat.

Both teams had unforgettable semifinal matches. 

First, it was that catch from Haidee Birkett, who produced nerves of steel to produce the take of the season on the boundary and send the Heat to their maiden final. 

While there were two special moments that sent the Sixers through to their fourth final, it was a shot in the super-over from Ellyse Perry in sudden-death that soared over the boundary.

"It's really nice to be our fourth one in a row and a real nod to the season we've had so far," she said.

The match between the two sides could be seen as a one-way street. The Sixers have dominated the WBBL in the last three seasons but in their last meeting, it was the Heat who took a win.

Brisbane was able to restrict the Sixers to just 88 runs with Sammy-Jo Johnson taking 3/23 and making 51 runs off 30 balls. The win came days after an 11 run win going the way of the Sixers, so would've given the Heat great confidence going into this match. 

Could it be repeated though? Heat captain Kirby Short said it's something that could happen again. 

"It's one of those things, lightning may or may not strike twice," she said.

"I think what it does give us is the plans we did have when executed were the right ones, the magic of cricket is trying to do that over and over."

Sixers are wary of their opponents though.

"I've looked at the Heat all year and gone 'they're a seriously dangerous side'," Perry said.

"They've played a consist blueprint of cricket and that's to take the game on."

It could be a sellout match in Sydney on Saturday morning with 4,000 tickets already sold with a capacity of 5,000, give or take. 

However, with the match being played in Sydney, it might be a bit one-sided support, something that could help the home side.

"It's a great place to come watch cricket, we had a fantastic crowd there last week," she said.

"I think the atmosphere plays a huge role to push you along to play good cricket and put on a good show."