The 49-year-old actress spilled the news while chatting with ET on the red carpet at the CMT Music Awards on Wednesday.
Reese Witherspoon and 17-year-old daughter Ava Phillippe continue to convince us they're actually sisters.
The mother-daughter team attended the launch of the Net-A-Porter X Draper James collaboration.
The family has been traveling since the holiday weekend.
The 29-year-old actress will also executive produce the upcoming film.
The 51-year-old actor's pitch for season two of 'Big Little Lies' is basically 'True Detective.'
The 'Big Little Lies' star hasn't forgotten her roots.
He's a British hunk who recently played King Arthur.
Like mother, like daughter! ET celebrates all the famous mamas enjoying their special day.
Happy Mother's Day to all!
The film, written and directed by famed filmmaker Nancy Meyers' daughter, Hallie Meyers-Shyer, hits theaters on Sept. 9, 2017.
The show's original stars all posed together in a tantalizing pic.
The actress told ET she was crying 'tears of joy' during the touching double star dedication on Thursday.
Hawn and Russell are only the third couple in Hollywood history to ever be honored with a double star ceremony.
