Barbora Krejcikova says she will enjoy a rare glass of champagne to celebrate a special French Open feat after she added the women's doubles title to her singles success at Roland Garros.

No player had achieved the double since France's Mary Pierce in 2000.

"I already said I don't really drink but I think it's a time to actually celebrate," the 25-year-old said.

The second seeds won 6-4 6-2 against Poland's Iga Swiatek and Bethanie Mattek-Sands of the United States.

It is their third major title together and Krejcikova's seventh in total.

As well as victories alongside Siniakova at the French Open and Wimbledon in 2018, she has also won the past three Australian Open mixed doubles.

On Saturday, Krejcikova sealed her rapid rise in the singles game by claiming a first Grand Slam title in an emotional three-set win over Russian 31st seed Anastasia Pavlyuchenkova.

After winning the title in only her fifth major singles tournament, she returned to familiar territory alongside Siniakova less than 24 hours later.

"Like yesterday there are so many emotions," added Krejcikova, who will go out for a celebratory dinner in Paris with Siniakova.

"I didn't really sleep well. I woke up in the morning and I felt really tired.

"But then I was really relaxed when I went on court. I was just trying to really support my partner and also just try to cheer her up a little bit."

The pair quickly raced into a 5-1 lead and, although Swiatek and Mattek-Sands fought back to 5-4, Krejcikova served out for the set.

Krejcikova and Siniakova had trouble with their serving in the Paris wind, racking up eight double faults, but had enough experience and knowhow to win the final four games for victory.

That meant Krejcikova became only the seventh woman in history to win both the singles and doubles at Roland Garros.