Serena Williams will face sister Venus in her 29th Grand Slam final
Venus was forced to fight back from behind in her semi-final today against fellow American Coco Vandeweghe, losing the first set in a tie-break.
But she came through to win 6-7, 6-2, 6-3 in nearly two-and-a-half hours.
By contrast, Serena dispatched 34-year-old Mirjana Lucic-Baroni 6-2, 6-1 in just 50 minutes this morning to book her place in a 29th Grand Slam final.
Venus William's best moments
Thu, July 7, 2016
Venus Williams is considered as one of the best female tennis players in the game, and she is definitely sexy. Here are some of her best moments
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Venus Williams poses in bikini by the ocean in Malibu, USA
But the six-time Australian Open champion admitted afterwards that the final will not be so easy – Venus has beaten her 11 times in 27 meetings.
"She's my toughest opponent, no-one has ever beaten me as much as Venus has," Serena said.
"She has a pretty good record against me.
Serena Williams beat Brit Johanna Konta in the quarter-finals before cruising into the final
Serena and Venus Williams will face off in a Grand Slam final for the eighth time on Saturday
"No matter what happens we've won, she's been through a lot, I've been through a lot.
"To see her do so well it's great so I look forward to it.
"A Williams is going to win this tournament."
Venus has not been in a Grand Slam final for eight years – she lost to Serena in straight sets at Wimbledon in 2009 – and has battled a life-changing disease known as Sjogren's Syndrome since 2011.
However, the 36-year-old has fought back to No 32 in the world rankings and her youngster sister has nothing but respect for her.
"She's an inspiration and really deserves all the credit," Serena added.
"I'm honoured to play her, she played so hard to get this far and after everything she's gone through, she inspires me."