Captain Meg Lanning set the tone with a 23-ball half-century scored inside the Powerplay, striking six fours and three sixes in a masterclass of T20 batting.
It took an Amelia Kerr wrong’un to bring the Australian captain undone on 54 from 25 deliveries, with the New Zealand leg-spinner striking a second huge blow when she trapped Elyse Villani lbw for 25.
Stars imports Mignon du Preez (12) and Natalie Sciver (7) did little damage, but the start made by Lanning allowed those following to bat with aggression, and a series of useful cameos including Annabel Sutherland’s 23 off 20 balls and Alana King’s 17 off eight carried the Stars to an imposing total of 9-177.
Recalled pace bowler Holly Ferling struck the first blow in reply, as Heat opener Georgia Redmayne was caught behind for 19, and Brisbane’s task became even harder when captain Jess Jonassen was run out for one.
Elevated to the top of the order, Harris was typically aggressive and hammered her way to a half-century from 36 deliveries, but she struggled to find a partner to stick with her.
Maddy Green (0), Laura Kimmince (2) and Amelia Kerr (3) fell in quick succession, with the Stars spin combo of King (2-22) and Sophie Day (1-25) maintaining the pressure.
Georgia Voll demonstrated why at 17 years of age she has been dubbed Harris 2.0 when she smashed a huge six into the grandstand during her innings of 21 off 15 balls.
While it was not enough to snatch an unlikely win, Harris’s action packed unbeaten 81 from 52 balls provided plenty of entertainment as she peppered the fans at North Sydney Oval with four sixes, as Brisbane finished their 20 overs on 8-154.