24th seed Victoria Azarenka continued her quest for a third Australian Open title by knocking third seed Jessica Pegula out in the quarter-finals.
The 33-year-old Belarusian, who last won the Australian Open in 2013, made a confident start and used the momentum to win 6-4 6-1.
Azarenka faces Wimbledon champion Elena Rybakina in the last four after the the 23 year old beat Jelena Ostapenko 6-2 6-4.
Rybakina fired 11 aces and 24 winners as she claimed a dominant victory over 17th seed Ostapenko.
The Kazakh, who is seeded 22nd, wrapped up victory in one hour and 19 minutes following a lengthy rain delay on Rod Laver Arena.