Scorecard
Australia regained the Women's Ashes after England collapsed to 87 all out to lose the second Twenty20 international by 20 runs.
Needing to win at Hove to keep the multi-format series alive, England were chasing 108 but slipped to 10-3 and 23-5, with Ellyse Perry taking 2-13.
Lydia Greenway made 26, but was last out with five balls to go.
Australia, who managed only 107-7, take an unassailable 10-4 lead on points with just one T20 remaining.


In doing so, the Southern Stars win the Ashes for the first time since 2010-11, England having won on both occasions since the multi-format of three one-day internationals, a Test and three T20s was introduced in 2013.
Behind 8-4 after losing the Test and two of the ODIs, a superb bowling display meant the hosts required only a modest target to take the series into a deciding T20 in Cardiff on Monday.
But, as with most of the series, England's batting was once again below par and they crumbled to their lowest ever T20 score.