has unveiled a matching tattoo with boyfriend Tom Pelphrey, in honor of their newborn daughter, Matilda.
actress, 37, started dating the actor, 40, last April and they .
They , and have been soaking in the milestones ever since.
Taking to Instagram, the Big Bang Theory star, 37, revealed a sweet design to commemorate their family, incorporating their initials.
‘We did a little thing…,’ she shared on her story, showing off the large inking that the Ozark actor, 40, had on his arm, beside the smaller one on her wrist.
‘Thank you @cachotattoo for bringing our special design to life!’
Kaley shared the news of Matilda’s arrival on social media last month, alongside adorable snaps of the tot.
‘3-30-23. Introducing, Matilda Carmine Richie Pelphrey, the new light of our lives! We are overjoyed and grateful for this little miracle,’ she wrote at the time.
‘Thank you to the doctors, nurses , family and friends who have helped us immensely over the last few days. We are blessed beyond belief.
‘@tommypelphrey didn’t think I could fall even more in love with you, but I did.’
The lovebirds were first linked last year, following the mom-of-one’s divorce from ex-husband Karl Cook.
Kaley – who was also previously married to first husband Mark Sweeting – recently marked their milestone anniversary with two snaps on Instagram, emphasizing how much has changed during their whirlwind relationship.
‘How it started ▶️ how it’s going! Cheers to a year with you @tommypelphrey,’ she captioned the upload.
‘Eternally grateful for you and what we have. I love you, bub!’
Before news of their romance emerged, the Flight Attendant star vowed that she had no plans to walk down the aisle for a third time.
In a candid chat with Glamour Magazine, she insisted: ‘I will never get married again. I would love to have a long-lasting relationship or a partnership. But I will never get married again. Absolutely not.
‘I believe in love because I’ve had incredible relationships. I know that they’re out there. I like being someone’s partner and having that companionship.
‘So I do believe there is someone out there. I love love. I’m not someone that wants to be by myself. I just need to figure out my priorities a little bit and make sure now I know that I need to water that relationship.
‘It’s like a plant. Sometimes I get too focused on the garden instead of the specific plant that needs to be watered. And I am well aware of that. I want to change, I want to be better.’