Sarah Snook and Dave Lawson.Photo:Jamie McCarthy/Getty

NEW YORK, NEW YORK - MARCH 20: (L-R) Sarah Snook and Dave Lawson attend the HBO’s “Succession” Season 4 Premiere at Jazz at Lincoln Center on March 20, 2023 in New York City. (Photo by Jamie McCarthy/Getty Images)

Jamie McCarthy/Getty

Sarah Snook’s family has grown!

“It’s hard to express what this show has meant to me,” Snook began. “The places I got to go, the immense talent I got to work with…it breaks my heart that it is all over.”

“But my heart had to be this full of all the memories, good times, challenges and triumphs, to be able to break at all…so that makes me grateful,” she continued.

“Congratulations Sarah. (And a second congratulations on that little head too in frame too),” Tonkin, 33, wrote.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

NEW YORK, NEW YORK - MARCH 20: Sarah Snook attends the HBO’s “Succession” Season 4 Premiere at Jazz at Lincoln Center on March 20, 2023 in New York City. (Photo by Jamie McCarthy/Getty Images)

“It’s exciting!” she toldEntertainment Tonightof her pregnancyas she felt her belly. “I feel great.”

Sarah Snook and Dave Lawson attend the HBO’s “Succession” Season 4 Premiere at Jazz at Lincoln Center on March 20, 2023 in New York City.

She revealed that she was pregnant while taping the fourth season ofSuccession,however, she reassured viewers, “I mean, you couldn’t super tell.”

“Because it’s not super big, at least at the moment,” she said.

Snook also referenced her special plus one, telling Megan Ryte of “Extra” she brought, “Someone I have not met yetbut I’m intimate with.”

She joked that herSuccessioncharacter, Shiv Roy, showed her “what not to do” when it comes to being a mom. “I don’t know if the Roy family are a paragon of family values… I don’t think we could be looking up to them for guidance.”

source: people.com