HBO revealed that season two of the hit show will be an "exploration of the malignancy of lies, the durability of friendships, the fragility of marriage and, of course, the vicious ferocity of sound parenting."
"Relationships will fray, loyalties will erode… the potential for emotional and bodily injury shall loom."
Kidman and Witherspoon will both act as executive producers.
HBO released a teaser clip, giving fans a glimpse of the shows new star Meryl Streep. The actress plays the mother-in-law of Nicole Kidman's character Celeste.
The official premiere date for Season 2 of Big Little Lies has yet to be announced. On New Year's Eve 2018, Kidman teased that the show is considering a June release date.