PARIS, France - The pressure is on for top seed Simona Halep as the World No.1 aims to capture her first Grand Slam title, but if the two-time French Open runner-up is feeling undue stress, she didn't let on after a defeating Garbiñe Muguruza on Thursday.

"I will let it go, and I will not think about Saturday's match," she said after a 6-1, 6-4 win over the 2016 champion. "Of course it's a big opportunity, it's a big chance, but you never know.

"So I lost three times until now and no one died, so it will be okay I think I will be more confident, because I have a lot of experience. But in tennis, you never know, so I will stay chill."

Halep will play 2017 US Open champion Sloane Stephens on Saturday, whom she beat twice last summer as the American was coming back from foot surgery. 

In a strangely full circle moment, the pair last played in Paris four years ago, when the Romanian went on to reach her first major final.

"I know that she's a strong opponent. She's hitting the ball, so it will be similar to today. I will play my game against her, as I did last year. It's clay. It's different. It's different match, different year. So I expect nothing. I just want to go there and try to keep my tactic and keep my positive things every second."

Since that first runner-up finish to Maria Sharapova, Halep has twice more reached a Grand Slam final, losing in three sets to Jelena Ostapenko at this event a year ago, and again to Caroline Wozniacki back at January's Australian Open.

"It's always a special moment to qualify in the final of a Grand Slam. It's a great moment. It's the best moment in your career, because the Grand Slams are the most important tournaments.

"I feel happy. I feel good. I feel that everything I have done until now, the work that I put after Melbourne and everything together, it worked very well, and that's why I'm here today."

At peace as she may be with past results, the 26-year-old didn't want to spend too much time reliving those defeats.

"Can we change the subject?" she joked. "Let's talk outside. It's beautiful weather.

"I will play for the fans from all over the world," she added, more seriously, "because I know that many are hoping me to win this Grand Slam finally.

"I will put everything I have Saturday on the court. I will think that I will make many people happy. So maybe I will have enough power to win it."