London, July 5 : If there's one subject that off limits at siblings Serena and Venus Williams, it is tennis.
The sisters are set to meet in the Wimbledon singles finals for the first time in five years, but the topic is not one that comes up at home.
We never really talk about tennis. There are a few things outside of tennis that we need to clear up though!" The Sun quoted defending champ Venus, 28, as saying.
Added Serena, 26: "There are so many other things to talk about."
So just what are the other things that they like to talk about? Shopping, they say, is a favourite.
However, they did open up about their impending clash.
Serena said: "This is what we've been aiming for. We haven't reached this achievement in a few years now.
"The opponent hasn't gotten any easier, that's for sure. I'm going in there playing, for me, the best player - and I hope for her the best player.
"It's going to be a battle again. That's just how it is. It's a lot easier meeting when we are in the final.
"That's the only thing I look for in the draw - to see if we're on opposite sides. I think it definitely makes it a lot easier for us both."
And now that they've chalked up 14 Grand Slams between them, the sisters are looking forward to making the history books.
Serena said: "We're just trying to make the history books now - we definitely want to be a part of it and stamp our name in those pages."