A trademark Sam Kerr header proved the difference on Sunday as Chelsea moved into their third successive FA Cup final.
The 60th-minute goal at Aston Villa set Chelsea up for a showdown with Manchester United at Wembley on May 14.
Kerr will be looking to add the FA Cup to her long list of club honours.
Chelsea have fallen short in the FA Cup final in the last two years – first to Arsenal and then to Manchester City – while it will be United’s first appearance in the decider.
United beat Brighton 3-2 in a thriller on Saturday after Rachel Williams broke the deadlock in the 89th minute.
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