New mom Kaley Cuoco has marked her first Mother's Day with her baby girl Matilda with a sweet post dedicated to the little one.
Taking to her Instagram stories on Sunday (May 14), the 37-year-old Big Bang Theory alum shared a video of her little one smiling. "Best first Mother's Day wake up ever," she captioned the post.
Cuoco can be heard saying in the video: "Did you make me a mommy? Is it Mommy's Day? Thank you for making me a mommy! I love you! You have a milk mustache."
Check out the video:The 8 Simple Rules star also posted an image carousel in honor of her first Mother's day, in which she lovingly described the milestone as "sweet".
She wrote in the caption: "Thank you to my wonderful other half (@tommypelphrey )for flying home just to spend the day with us and to all the incredible women who are truly helping us raise our sweet Matilda! We love and appreciate you!"
Speaking to People earlier this month about how easily her partner, Tom Pelphrey, has taken to being a father, Cuoco said: "I cannot believe how natural he is, how much he loves it."
"I mean, when we were in the hospital, he did everything — every diaper, he's the swaddle king," she continued. "All the nurses said, 'Oh my God, you're the best guy swaddler we've ever seen.'"
She went on to say that Pelphrey, 40, adores his little girl, who was born on March 30, 2023, and that "she looks exactly like him. And he has a very distinct voice, so when he talks to her, she's like 360. Her head turns around, and she's like, 'I know that voice.' It's very sweet."
Cuoco and Pelphrey announced Matilda's birth at the start of last month in a post on Instagram.
The post, which included several images of their newborn as well as the new parents, was captioned: "Introducing, Matilda Carmine Richie Pelphrey, the new light of our lives! We are overjoyed and grateful for this little miracle.
"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."
Needless to say, the post, which has been "liked" more than 2 million times, attracted a number of gushing comments from celebrities and fans alike.
Among her famous peers, the likes of Ashley Tisdale, Melissa Rauch and T.R. Knight congratulated the new mom.

But it was the comments from fans that were the most heartwarming.
One wrote: "Congratulations, Matilda is beautiful. Enjoy every day they grown so darn fast. My babies are 42 and 38. It seemed like yesterday."
Another penned alongside three red heart emojis: "Matilda was my mom’s name (she hated it, but I always thought it was cool!). Most everyone called her Tilly and her great-great granddaughter is named Tilly after her and she’s a spitfire just like her. Congratulations on your beautiful baby girl!!!"
A third commented: "I love that you posted photos just like any other local mom would. She’s absolutely beautiful, just like her loving parents! Congratulations!"


