Serena and Venus Williams can book places in the Wimbledon final on Thursday, seven years after they last slugged it out for a Grand Slam title.
For the first time since 2009, both sisters have made it to the Wimbledon semi-finals.
To make the dream final become a reality, defending champion Serena must beat Russian world number 50 Elena Vesnina, while world number eight Venus plays Australian Open champion Angelique Kerber.
Between 2000 and 2010, Serena and Venus won a combined nine Wimbledon titles and made a total of 14 appearances in the final, with four of those being all-Williams affairs in 2002, 2003, 2008 and 2009.
But, just when it seemed the Williams` duopoly in south-west London would never end, in 2011 Venus was struck down by illness and Serena`s win over her sister at Wimbledon in 2009 remains their last title clash.
Now, at an age when most of her contemporaries had long since called it quits, 36-year-old Venus has willed herself back into contention for an eighth Grand Slam crown.
It is a renaissance that makes Serena proud, but even the 34-year-old didn`t expect to still be in which a chance of contesting the sport`s top prizes with her sister at this advanced stage of their careers.
“I`m surprised of the longevity of it. That kind of definitely took me by surprise,” Serena said.
“When you`re younger and you have a dream and you say it and you believe it, that`s one thing. But for it to really happen and to come true, it`s just a completely different emotion.
“It means Venus has a lot of perseverance. She`s a real fighter. Like I always say, it`s super inspiring for me. It`s really great.
“With everything she`s been through, I think it`s built a ton of character in her, and in me just by being around her.”
World number one Serena, bidding for a record-equalling 22nd major title and seventh Wimbledon crown, appears to have the easier draw against first-time Grand Slam semi-finalist Vesnina, having won all four of their previous encounters.