Sarah Bryce's unbeaten 34 sent The Blaze through the the Rachael Heyhoe Flint Trophy final, after the wicketkeeper sealed an eight-wicket triumph with a six at Beckenham.
Chasing a DLS revised target of 52 from 10 overs, The Blaze ultimately won with eight balls to spare.
Earlier, the Stars were bowled out for just 148, with Marie Kelly, who had the best figures of two for seven, one of four Blaze bowlers to claim two wickets. Ryana MacDonald-Gay was the Stars' top-scorer with 26.
The Blaze will now play the Southern Vipers in Sunday’s final at Northampton after prevailing on an afternoon heavily interrupted by showers.
Tickets for the final can be secured here...
A considerable amount of rain had fallen across Kent overnight but by the scheduled start of play the New County Ground was bathed in sunshine.
Stars lost Kira Chathli to just the second ball of the innings, when she was bowled by Grace Ballinger, before captain Smith was bowled by Kirstie Gordon for 21 and Alice Capsey played on to Josie Groves for five.
Gordon then bowled Alice Davidson-Richards middle-stump for eight and Alexa Stonehouse went for 20 swishing Lucy Higham to mid-wicket.
Kelly then had Paige Scholfield caught and bowled for three, and in her next over Kelly had Aylish Cranstone lbw for 13.
After a brief rain delay Bethan Miles was given lbw to an inswinger from Kathryn Bryce for 17, but Ryana MacDonald-Gay and Chloe Hill put on 33 for the ninth wicket before the latter went for 21, pulling Bryce to Sophie Munro at mid-wicket.
If that represented something of a recovery, there were still seven overs left when Mac-Donald Gay charged down the wicket to Higham and was stumped by Sarah Bryce.
In reply, The Blaze lost Lizelle Lee early on before the rain returned at 2pm, leading to a stoppage of over three hours.
The players returned to the field at 5.25pm, with The Blaze needing 37 from 6.4 overs.
Kelly was caught behind, but Sarah Bryce and Georgie Boyce chipped away at the target and it was the former who hit the winning runs in some style, ending as the game’s top corer on 34 not out.