Kvitova improved her record to 25-5 on the Wimbledon grass and she's made at least the quarterfinals five years in a row.
It was the first Grand Slam semifinal between two Czech women. It marked No. 6-seeded Kvitova's 15th consecutive win against a lefthander and she beat 23rd-seeded Safarova for the sixth time in a row.
The 2011 champ will play the winner of the semifinal between French Open finalist and third seed Simona Halep and Eugenie Bouchard.