The Williams sisters
Venus and Serena Williams will meet in a Grand Slam final for the ninth time after the American sisters came through their semi-finals in Melbourne.
Thirteenth seed Venus, 36, beat fellow American Coco Vandeweghe 6-7 (3-7) 6-2 6-3 to reach her first major final since 2009.
World number two Serena, 35, saw off unseeded Croat Mirjana Lucic-Baroni 6-2 6-1 in the second semi-final.