Pregnant Sienna Miller Pictures in London

Sienna Miller was lunching in London with her mom, Jo, Sunday when she ran into fellow actors, Elsa Pataky and Chris Hemsworth. Pregnant Sienna was able to say hello to Elsa and Chris's new addition, baby India! Chris and Elsa welcomed the bundle of joy nearly two months ago. Press duties for his latest movie Snow White and the Huntsman, in addition to being a new dad, have made the last few weeks especially busy for Chris — and his sky-rocketing career earned him a place on the 2012 PopSugar 100! Sienna, however, has been taking it easy during the last period of her pregnancy. She and dad-to-be Tom Sturridge got away for a babymoon in Italy, and have been nesting in the UK. Sienna was even celebrated at her baby shower at the end of May, but hasn't publicly confirmed a due date.