Liv Tyler Welcomes Baby No. 3 -- Find Out Her Name!

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Liv Tyler and her fiancé, sports agent Dan Gardner, have welcomed their second child together!

ET can confirm that the pair, also proud parents to 1-year-old son Sailor Gene, welcomed a daughter this weekend. This is the third child for the Leftovers actress, 38, who shares a 11-year-old son, Milo, with her ex-husband, Royston Langdon. Gardner also has an 8-year-old son, Grey, from a previous relationship.

Tyler introduced her baby girl on Instagram, with a photo of her cuddled up to Gardner. "Hello!!!!!? our beautiful baby girl is here !!!!" she wrote. "? Lula Rose Gardner ? we are sooooo happy ? heart exploding with love !!!!!"

WATCH: Liv Tyler (Finally) Confirms She's Engaged to David Gardner 

The actress, who will also be starring in the horror movie Wildling, announced she was expecting in January.

"Oh my goodness it seems the stork is visiting us again!!!!" she captioned an adorable black-and-white Instagram photo. "I am growing another little Tyler Gardner in my belly. Our family is growing!!! So grateful. @davidgardner I love you."

NEWS: Liv Tyler Shows Off Her Bare Baby Bump in Adorable Photo 

She has also been posting countless photos of her growing baby bump on Instagram for months.

"Ohhhh my goodness look at that bump ? so pointy and giant!!" she shared on Instagram last week. "I can't wait to meet the beautiful little human living in there…"

Congrats to the happy couple!