Big Little Lies star Zoe Kravitz secretly marries boyfriend Karl Glusman

Zoe Kravitz attends The Metropolitan Museum of Art's Costume Institute benefit gala. Photo / AP.

Big Little Lies star Zoe Kravitz has reportedly married her boyfriend Karl Glusman ahead of their scheduled wedding next month.

The pair have been together for three years and were due to marry next month in France but it appears that Kravitz couldn't wait.

US Weekly reports that the daughter of musician Lenny Kravitz and actress Lisa Bonet is now a married woman.

The pair have been dating since 2016 and Kravitz has always spoken fondly of her love for Glusman.

"It just feels like a big fresh start — turning 30, getting married, writing on the show, producing. It's like everything's a level deeper than it used to be," said Kravitz.

"[I want to be] doing less things, but doing them better. Instead of doing a bunch of projects, I'd like to develop one project, which takes longer, but feels so much more rewarding, especially when you're getting something made that probably wouldn't have been made otherwise.

"That, and then also just really trying to enjoy life and take the time to spend time with people who I love."

Kravitz revealed that Glusman proposed to her "at home, in sweatpants". "He nailed it," she said.

Kravitz is set to appear in the second season of Big Little Lies, which stars Nicole Kidman, who was once engaged to her father.

Glusman is also an actor, co-starring with Kravitz in the 2016 film Nocturnal Animals. He will be seen next in the TV show, Devs.