On Friday, they beat the Italians Sara Errani and Roberta Vinci with a final score of 1:6, 6:3, 10:4.
In the finals the Russians will take on Andrea Hlavackova and Lucie Hradecka of the Czech Republic.
Earlier in the day Maria Sharapova also made it to the finals of the tournament.
She beat top-ranked Victoria Azarenka of the Republic of Belarus with a score of 6:4, 6:2.
In the final, Sharapova will face American Serena Williams.
The prize fund of the competition is $4.9 million.
Voice of Russia, TASS