Big Little Liescasting director David Rubin on how they landed Meryl Streep for season 2

We started with two powerhouses already in place, Rubin tells EW.

It also helped that Streep was already a confessed fan of the first season.

Still, even with that audition process, Rubin says they didnt do chemistry tests with their leading ladies.

For the kids in the series, he prefers to find unknowns and child actors who lack professional experience.

When you have children who havent been exposed to that, you get a freshness.

Rubin says he often has a more meditative process for projects of this nature.

In addition to both seasons ofBig Little Lies,he also cast another hit HBO adaptation,Sharp Objects.

That process broadens my possibilities so Im not limiting my selections to the way a particular character is described.

Big Little Liesis now airing on Sundays on HBO.