Nicole Kidman has posted the first photo of Meryl Streep in her new role on the set of HBO’s Big Little Lies.

“First day on the set with Meryl and “my” darling boys!”, writes Kidman in the caption.

Three-time Oscar winner Streep plays the new character of Mary Louise Wright, the mother-in-law of Kidman’s Celeste Wright and mother of Alexander Skarsgard’s Perry Wright.

In addition to Kidman, returning cast includes Reese Witherspoon as Madeline Martha Mackenzie, Adam Scott as Ed MacKenzie, Laura Dern as Renata Klein, Shailene Woodley as Jane and Zoë Kravitz as Bonnie Carlson. Douglas Smith joins as new character Corey Brockfield in Season 2.

First day on the set with Meryl and “my” darling boys! #BigLittleLies

A post shared by Nicole Kidman (@nicolekidman) on

Big Little Lies Season 2 is expected to air in 2019.