Five days after securing the county championship, Kent secured a domestic double by beating Berkshire by eight wickets to win the women's T20 Cup.
Kent beat Sussex in the semi-final by five wickets, while Berkshire beat Yorkshire by 10 runs.
In the final Kent restricted Berkshire to 73 all out, a total that Charlotte Edwards' side reached for the loss of just two wickets.
Edwards said: "It's just reward for the girls who have worked hard all season."
The Kent captain continued: "All of us have played our part this season, with young players really performing and stepping up to the mark which is great to see.
"Without a doubt this is a great way to end the season as double champions."