Serena, speaking ahead of the siblings' match-up on Saturday in Buenos Aires, believes being successful African-American women helped her and Venus leave an indelible mark on the world of tennis.
"We've brought a lot of passion, we've brought a lot of style and fashion as well to the game," Serena said.
"I think that totally changed the dynamic of the game. I remember in particular Venus started wearing all these amazing outfits and I was so influenced by that.
"I definitely think we had a huge impact on tennis in that way. As well, of course, bringing such power into tennis, and bringing a new colour.
"Being African-American, and playing successful tennis and winning grand slams, that hadn't been done in a long time. I think that got so much excitement involved in tennis as well."
Serena revealed this was the first time she had ever visited Argentina and the 17-time grand slam champion said she was excited by being in the South American country.
"This is my first time in Argentina, never been here before," she said.
"I've always wanted to come here and visit more of South America and bring tennis here. Myself and Venus, we've never played that much in South America because there are not too many tour events.
"So, we're really excited to be here in South America and have an opportunity to bring our tennis to Argentina especially, it's really, really exciting."
Venus, who relaunched her EleVen fashion brand in 2012, is happy to balance her off-court activities with her tennis career, despite dropping to 47 in the world rankings.
"I'm grateful and happy to be doing what I love down here, despite that in sport and in life, sometimes you're injured, sometimes you're hurt, sometimes you don't feel amazing," Venus said.
"I'm just happy to be playing great tennis. I do everything at the same time, tennis and fashion and all that stuff. You don't have to stop one to do the other."