When you're growing a human, you want to be comfortable!

Natalie Portman caught a flight out of LAX yesterday, and the actress wore pajamas and a trench coat to cover her baby bump as she made her way through the airport. She's the polar opposite of Kim Kardashian!

The brunette beauty is expecting her second child with her ballet dancer husband Benjamin Millepied, whom she met while filming Black Swan. They are already parents to son Aleph, 5.

The momma-to-be has had a busy couple of weeks promoting her new projects. She stars in the upcoming film Jackie, which tells the story of Jackie O's first days in the White House following JFK's assassination. She also co-stars with Lily-Rose Depp in Planetarium, which follows two psychic sisters in pre-war France.

The 35-year-old has been everywhere from Cannes to Venice to Toronto to plug her movies for various film festivals, so she's probably ready to kick back and relax!