and husband Mark Webber welcomed their second child together on Monday!
The 30-year-old Australian actress shared the news via Twitter, also revealing the baby boy's sweet name.
"Forest Sage Palmer has arrived earth side," she tweeted along with a picture of the family huddled over their new addition. "Our hearts are full and blessed. 12/12 at 12:18 p.m. in Adelaide [Australia]. 8lbs. 4 oz."
Forest will join 2-year-old brother Bodhi, who has been anxiously awaiting the new arrival.
Six months ago, Palmer announced her pregnancy news by sharing a picture of her son kissing her bare baby bump.
"And just like that my heart grew bigger," she posted on May 27. "Welcoming baby number 2 in to the family. Can't believe our little Bodhi is going to be a big brother!"
Palmer and Webber, 36, wed in December 2013 during a ceremony in Mexico after first meeting in 2012.