Serena Williams has paid glowing tributes to her older sister Venus even as she backs the 37-year-old to go all the way to ensure that the Wimbledon title remains in the family for another year.

Having surmounted Johanna Konta on Thursday to reach her ninth Wimbledon final, Venus has one more last hurdle as she takes on Spain's Garbine Muguruza in the women's final on Saturday.

Serena, who missed her title defence after becoming pregnant with her first child, believes her sibling can win a sixth All England Club crown.

"I have to believe that, and I know she has to believe that. We work so many years for these moments that she has right now, and I'm really happy for her," the 23-time grand slam winner told Yahoo Sports.

"I'm proud of her, everyone is proud of her. She's such an amazing person, and she's so nice, and she's been through a lot obviously, but we are always rooting for her."

Venus has beaten Muguruza in three of their four meetings to date but will be wary of the world number 15 after the 23-year-old knocked her out of the Italian Open in May.