Yaroslava Shvedova has ditched wedding plans to try to help Australian tennis bridesmaid Casey Dellacqua land a breakthrough grand slam women’s doubles crown.

Dellacqua revealed Shvedova had planned to get married at home in Kazakhstan on Saturday, but the pair will take on world No.1s Martina Hingis and Sania Mirza in the US Open final in New York instead.

“Slava was supposed to get married tomorrow, so she didn’t have much faith in us to make the final,” Dellacqua joked after the dynamic duo recovered from a set down to beat German Ana-Lena Groenefeld and American Coco Vandeweghe 6-7 (3-7) 7-5 7-5 in Friday’s semi-finals.

Saturday is also Shvedova’s 28th birthday, but all celebrations are on hold until she and Dellacqua win the Open.

“I sent my fiance home to prepare everything but now I think he’s happy because he’s had his second night of bachelor partying and I think there’s going to be a third night as well,” Shvedova said.

“It’s my birthday too and it was the day we met so it was going to be a good day.

“But now I don’t know. I think we’re going to get married, but no party.”

Five times a losing finalist at the majors, Dellacqua is hoping to add a women’s doubles title to her 2011 French Open mixed doubles triumph with American Scott Lipsky.

The West Australian has quickly forged a formidable partnership with Shvedova.

In just seven events together since teaming in May, they’ve won in Madrid, made the French Open final as well as Cincinnati and the quarters at Wimbledon.

Now Dellacqua is into a second US Open final after losing the 2013 decider with fellow Australian Ashleigh Barty.

“I think we can take a lot of positives into the final,” Dellacqua said.

“We’ve played a lot of matches that we could have lost and competed hard and we’re here now, so let’s enjoy the moment and play our best tennis and just see how it goes.”