Dave Gardner and Liv Tyler attend the opening night performance of "La Fille Mal Gardee" at The Royal Opera House on April 23, 2015 in London, England. Credit: David M. Benett/Getty Images

She's here! Liv Tyler and fiancé David Gardner have welcomed their second child, a daughter named Lula Rose.

The actress, 39, posted a photo on Sunday, July 10, on Instagram of the newborn being cradled in her daddy's arms, writing, "Hello!!!!! Our beautiful baby girl is here!!!! Lula Rose Gardner We are soooooo happy heart exploding with love!!!!!"

Gardner, who also has a son, Sailor, 16 months, with Tyler, shared the pic on Instagram, writing, "Our gorgeous baby girl has arrived 'Lula Rose Gardner' unbelievably beautiful, healthy and thank goodness she looks like her Momma!!!! Truly blessed Daddies girl....Now the real work starts training her big brothers to all become Ninja's, Martial Arts Experts & 24-7 Body Guards!!!"

Gardner also has a son, Gray, 8, from a previous marriage, while Tyler and ex-husband Royston Langdon share a son named Milo, 11.

Tyler's mom, Bebe Buell, let slip that the baby was born on Friday, July 8, as she shared her excitement on Instagram over her new granddaughter's arrival.

"So elated that my baby girl has revealed the birth of her baby girl Lula Rose," Buell wrote on Sunday. "I've been bursting at the seams with joy since Friday July 8th & unable to gush until everyone was safely home from the hospital and of course @misslivalittle and Lula's Daddy @davidgardner made their formal announcement. Now that that's done, I can now explode with happiness! Lula was born smack dab in the middle of Liv's b-day on July 1st and mine on July 14th. Another Cancerian female warrior to add to our magical Wolf pack!"

"Congratulations my dearest David and Livvy! I love you! And love to Sailor and my first born GC Milo," she continued. "Proud big brothers! And congrats to Gray Gardner, too! Lula is going to have THREE brothers to take care of her through life!"

So elated that my baby girl has revealed the birth of her baby girl Lula Rose... I've been bursting at the seams with joy since Friday July 8th & unable to gush until everyone was safely home from the hospital and of course @misslivalittle and Lula's Daddy @davidgardner made their formal announcement. Now that that's done, I can now explode💥 with happiness! 🎉🎀🎈Lula was born smack dab in the middle of Liv's b-day on July 1st and mine on July 14th. Another Cancerian🦀 female warrior to add to our magical Wolf pack! @iamstevent Thanks for the pic @davidcroland 🌹🌟👶👣 Congratulations my dearest David and Livvy! I love you! And love to Sailor⚓️ and my first born GC Milo 🦄 Proud big brothers! And congrats to Gray Gardner, too! Lula is going to have THREE brothers to take care of her through life! #blessings #family

A photo posted by Bebe Buell (@realbebebuell) on

As Us Weekly previously reported, The Leftovers actress and the sports agent got secretly engaged at the end of 2014.

The daughter of Aerosmith front man Steven Tyler announced that she was pregnant with her third child in January, less than a year after welcoming Sailor (whose godfather is David Beckham).

She posted a pic on Instagram and wrote, "Oh my goodness it seems the stork is visiting us again!!!! I am growing another little Tyler Gardner in my belly. Our family is growing!!! So grateful."

Tyler joked about her massive baby bump when she shared a pic on Instagram at the end of June, writing, "Ohhhh my goodness look at that bump so pointy and giant!! I can't wait to meet the beautiful little human living in there."

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