Hayes MacArthur and Ali Larter Welcome Daughter Vivienne Margaret

01/19/2015 at 09:45 PM ET

Ali Larter Welcomes Daughter Vivienne Margaret Hayes MacArthur
John Sciulli/Getty

It’s a girl!

Ali Larter and Hayes MacArthur are parents for the second time after welcoming a daughter on Thursday, Jan. 15, the actress announced on her website Monday.

“We couldn’t be more excited to share news of the arrival of Vivienne Margaret MacArthur,” the Legends star wrote alongside a photo of the newborn snapped by Dad.

“She came bearing gifts for her brother: Batman sheets and lots of gummy bears!!! 7.5 lbs. of love.”

Vivienne joins the couple’s 4-year-old sonTheodore Hayes, at home.

Larter, 38, held off on announcing her pregnancy until she could get a little help from friend Jimmy Fallon.

“[Three years ago] I came on and I was pregnant and it went so well, and I said to my husband, ‘I’m going on Fallon, you know what that means — gotta get pregnant!'” she joked during her August appearance.

And although the sibling bond seemed to be off to a good start — Larter shared that her son was looking forward to watching Batman with the new baby — the mom-to-be later joked she had resorted to winning over the soon-to-be big brother with a few treats.

“I’ve started giving him presents from his little baby brother or sister,” the actress told PEOPLE. “We’re definitely working him, bribing him, whatever we have to do to make sure he doesn’t sneak into that crib and dangle that baby by its feet.”

It’s set to be a busy year for the couple — Larter’s show was recently renewed for a second season, while MacArthur will be a regular on the upcoming TBS comedy Angie Tribeca.

Ali Larter Welcomes Daughter Vivienne Margaret Hayes MacArthur
Hayes MacArthur

— Anya Leon with reporting by Blaine Zuckerman and Jennifer Garcia 

RELATED GALLERY: Forget Flats! Stars Are Pregnant in Heels

FLASHBACK: Ali Larter reveals which boy bander she had a crush on in high school

FILED UNDER: Ali Larter , Babies , Births , News

Share this story:

Your reaction:

Add A Comment

PEOPLE.com reserves the right to remove comments at their discretion.

Showing 28 comments

Meg on

What a sweet baby! Congratulations! And love her name.

klutzy_girl on

Ooh, pretty name and cute baby. Congratulations to them!

ser0630 on

What a beautiful little peanut! I love the fact Ali mentions bribing her big brother!

Marilyn on

Finally, nice first and middle names for a change.

Ty on

I really like the name. It’s the perfect combination of classic, unique, and pretty.

Bec on

Beautiful name and baby!

mary on

His mother was Helen Hayes/

Leah on

Beautiful baby and beautiful name – congratulations

Audrey on

If Helen Hayes was his mother she would have had him at age 77. I don’t think so!

Marky on

What a lovely baby and such a sweet name! I think it was very sweet of them to share the picture with fans….nice!

Kat on

Helen Hayes was his grandmother. His mother is singer Shelley MacArthur Farley.

bb on

Favorite celeb baby names, ever. *applause*

Judy on

Beautiful baby and family!

Sandra on

Beautiful name

Val on

Love the name! So happy for them.

Guest on

Congratulations. What a beautiful baby and equally beautiful name.

ella on

What a cutie

Debbie on

Pretty baby & lovely name.

He is not Helen Hayes’ grandson. Her son was James MacArthur (Danny Williams on original Hawaii Five-0). His children are Charlie, Mary & Jamie.

charlotte on

Beautiful! Congratulations.

Kimberly on

Awww so sweet and what a lovely name, so classy!

Catherine on

What a beautiful baby!

Mary on

She’s a cutie pie, nice normal name.

Pam on

Adorable picture. Congrats to the happy family!

SAR on

How nice! They’ve got one of each now, and I like the names they chose: Theodore and Vivienne. Classic but not stuffy.

Anonymous on

Like the name, normal compare to many other Hollywood kids names.

Edie on

Such a beautiful baby girl.. Love the name ..that was my mother and grandmother’s name too. Helen Hayes the famous actress and her Husband Charles McArthur never had biologicall children and adopted James who later became and actor in movies and in Hawaii 50.

Debbie on

Helen Hayes & Charles MacArthur did have a biological daughter, Mary. She died as a young girl. James was adopted as an infant.

Anonymous on

Big congrats to Ali and Hayes! And welcome, Vivienne Margaret, to our world!