The Oscar-winning actress, 35, appeared to announce her second pregnancy in both a very low-key and super high-profile way: letting her midriff bump do the talking at the Venice Film Festival.
Natalie walked the red carpet for the premiere of her movie Planetarium looking absolutely radiant.
If true, this will be her second child. She's already mum to five-year-old son Aleph with her ballet dancer and choreographer husband Benjamin Millepied, whom she met while filming Black Swan.
Although Natalie has not publicly commented on the suggestion she's expecting a second child, multiple sources have confirmed to outlets including People, Us Weekly and Entertainment Tonight that a baby is on the way.
Natalie and Benjamin married in 2012 but keep their private lives away from the spotlight.
Congrats to the couple!