In the quarter-finals second seed Federer beat Kei Nishikori 4-6, 6-1, 6-4, 6-4 while third seed Nadal progressed with a 7-5, 6-2, 6-2 victory against Sam Querrey.
The duo, who have won ten Wimbledon titles between them, will play against each other at the All England Club for the first time since the 2008 final - an epic five-setter won by Nadal.
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Seven-time champion Williams is through to her 11th final at the All England Club after beating Barbora Strycova 6-1, 6-2 in the last four. The American, 37, will be aiming to win a record-equalling 24th grand slam title.
Halep progressed to Saturday’s final after beating Elina Svitolina 6-1, 6-3. It will be the Romanian’s first Wimbledon final and she is going for a second grand slam title after winning the French Open in 2018.
Former British No.1 Greg Rusedski, Metro: Roger Federer
“I still think it’s the ‘Big Three’ this year. Federer is my favourite. Rafa if he gets to the second week becomes dangerous and then Novak, defending champion. I see one of those three guys winning but with Federer with the slight edge at the moment.”
The Daily Telegraph: Novak Djokovic
“Novak Djokovic’s ambition of simultaneously holding all four grand slam singles titles was dashed by Dominic Thiem in their weather-hampered French Open semi-final earlier this month but the Serbian remains the leading contender to defend his title at SW19.”
The Roar: Roger Federer
“The Swiss maestro [Federer] did well to advance to the semi-finals of the French Open, where he again found the Spaniard [Nadal] a step too far. Nonetheless, it proved that he still has what it takes to take on the best on his least preferred surface of clay. On the grass courts, where he is most comfortable, I have him going all the way and winning a 21st major title.”
Jakob Haugerud, Last Word on Tennis: Novak Djokovic
“Given his form over the last year, and being the reigning Wimbledon champion, it seems fair to place the Serb as the favourite to win the title. However, it really is a toss up between the Big Three.”
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