PARIS, France - No.4 seed Garbiñe lost the first set of her French Open campaign, but has won 12 straight since, avoiding a minor hiccup to beat No.21 seed and 2010 runner-up Samantha Stosur, 6-2, 6-4, and become the first Spanish woman to reach a Roland Garros final since Conchita Martinez in 2000.
"I'm very happy," she said in her post-match press conference. "This was a bit difficult to play because I wanted to win so much against Samantha. She's such a great tennis player.
"I succeeded finally, so it's a dream come true. I really feel good."
Stosur was playing her first Grand Slam semifinal since 2012, but had won her only previous meeting with Muguruza and had overcome a left wrist injury to play solid tennis over the likes 2014 and 2015 finalists Simona Halep and Lucie Safarova.
Muguruza, however, was in no mood to help along Stosur's Cinderella story, and promptly raced out to a 4-0 lead in the opening set. The Aussie eventually got her bearings to get on the board, but the Spaniard was already too far ahead, and took a one set lead in 33 minutes.
"I have learned a lot how to control my emotions inside the court and outside the court. I think it's very important, because sometimes it's not too good to show them or not controlling them.
"In a tournament like this you have to be very focused. It's very long. Even longer with this kind of weather that you have to wait a lot.
"Here, I'm learning. Here just I'm putting everything into that and it's going well."
The second set was more of the same as the 2015 Wimbledon runner-up displayed the efficient clay court game that had taken her to the quarterfinals the last two years, easing out to another double break advantage behind a Stosur double fault. Nerves briefly set in when it came time to serve for the match, but Muguruza got the job done on the second time of asking, hitting 20 winners to 18 unforced errors and five aces in total - three in the final game.
"I think it's normal," she told Cedric Pioline during her on-court interview when asked about tightening up at the finish line. "It's always a difficult moment, and I really want to win. It was a combination of her playing very well and me just being a little nervous!"
Into her second Grand Slam final in under 12 months, Muguruza will play World No.1 Serena Williams in a rematch of last year's Wimbledon final for her first Grand Slam title, and will try to become the second Spanish woman to win on the terre battue, and the first since Arantxa Sánchez Vicario, who won the title three times (1989, 1994, 1998).
"I think emotions are sometimes bad. You just have to be calm, prepare yourself as much as you can, and play without regrets."
By reaching the final, she moves up to No.3 in the world, just 14 points shy of the No.2 spot; should she win the title, she would move up to No.2.Moves to No.3 by reaching the final, only 14 points shy of the No.2 spot.