This Mother's Day hit different for Kaley Cuoco.

The Flight Attendant actress is celebrating the holiday for the first time as a mom. Mother's Day 2023 took place May 14, six weeks after Kaley gave birth to her and partner Tom Pelphrey's first child, daughter Matilda Carmine Richie Pelphrey. On the holiday, the actress shared on her Instagram Stories a video of the infant swaddled and cooing in her crib, captioning the clip, "Best first Mother's Day wake up ever!"

"Hello! Good morning!" she greeted her daughter. "Did you make me a mommy? Is it mommy's day? Thank you for making me a mommy. Thank you for Mother's Day."

She also shared a pic of herself and Tom with their mothers, Layne Ann Cuoco and Laurie Pelphrey, writing, "To all the moms, especially these two gems! I get it now. Love you!"

The Ozark actor paid tribute to both Kaley and their moms on his own Instagram page, including more adorable pics of baby Matilda. "Happy Mother's Day to my endlessly incredible partner," he wrote. "Matilda's mom is the funniest, kindest, bravest and most beautiful badass mom. Matilda also has two grandmas, (and a great grandma!!) and she is incredibly fortunate to be surrounded and loved by some of the most amazing, strong, independent women there are."

He added, "Happy Mother's Day to all!! Our real heroes. #mothersday @kaleycuoco."

Another first-time mom, Keke Palmer, also received a tribute from her partner, Darius Jackson. The two welcomed their first child together, son Leodis Andrellton Jackson, in February.

"To your 1st of many Mother's Day," he captioned a video montage documenting her pregnancy, while the actress responded, "Thanks for making me a mama!!" She added, "I didn't want it to end!!!!!!"

Meanwhile, Keke shared pics from a mother-son photo shoot on her Instagram Stories.

Other celebs, including Justin Timberlake, Orlando Bloom and Nick Jonas, also honored the moms in their life on social media on Mother's Day.

The Jonas Brothers singer posted new images of his wife Priyanka Chopra with their toddler daughter, Malti Marie Chopra Jonas, on Instagram.

"Happy Mother's Day my love," Nick wrote. "You are an incredible mother. You light up me and MM's world every day."

See stars' Mother's Day 2023 tributes below:

Nicole Richie celebrated Mother's Day with an adorable picture posted to her Instagram story, featuring her mother, Brenda Harvey Richie, her adoptive sister Sofia Richie, and her 15-year-old daughter, Harlow.

The Flight Attendant actress celebrated her first Mother's Day as a mom, sharing an Instagram Stories video of herself sharing a tender moment with her and partner Tom Pelphrey's newborn daughter. She captioned the clip, "Best first Mother's Day wake up ever!"

Kaley's partner paid tribute to the actress and their moms, sharing pics of them with his and the actress' newborn daughter.

For her first Mother's Day as a mom, the actress' partner, Darius Jackson, shared a slew of throwback photos of the actress when she was pregnant with their first child, son Leodis.

The actress also shared this throwback pic of himself with his mom, writing, "Happy Mother's Day to all the mammas out there and to anyone in your life who has offered you unconditional love."

The actor shared a selfie of himself with his fiancée, mom of their daughter Daisy.

On Mother's Day 2023, the actor paid tribute to his late wife Kelly Preston, who died in 2020 at age 57 after battling breast cancer, sharing a throwback video of the actress opening a Mother's Day present on Instagram.

"Happy Mother's Day Kelly," he wrote. "We miss you and love you! Love, Ben, Ella and John."

The Kylie Cosmetics founder shared several never-before-seen pics of her kids Stormi Webster, 5, and Aire Webster, 15 months, on Mother's Day 2023.

The Pitch Perfect actress shared new pics of her daughter Royce on her first Mother's Day as a mom. (also pictured: Her fiancée Ramona Agruma.)

"Gosh I'm lucky to be their mama," Reese captioned this pic of herself with children Ava Phillippe, Deacon Phillippe and Tennessee Toth.

"Stepping into the world of motherhood has been like entering the most expansive, mythical labyrinth- it's felt simultaneously overwhelming and oddly familiar. It's the job I'm proudest of and the most grateful for. Always," the This Is Us alum, who shares sons August and Oscar with husband Taylor Goldsmith, wrote on Instagram. "Hats off to all those who mother in any and every way and an extra squeeze to those who find this day difficult. #HappyMother'sDay."

The star also honored his own mother with an Instagram post. "Mom… We've had some fun, haven't we?!" he wrote. "I hope you know every day how much you've taught me and how much I love you. Happy Mother's Day, Mom. Thank you for loving me all along the way."

The star paid tribute to his wife, mother of their sons Silas and Phineas, on Instagram. "This human right here," he wrote. "Mom, partner, brilliant, beautiful, badass… You are always there for me and these boys no matter the time of day or night. I'm in awe of you and beyond grateful that you are ours. We love you, Mommy!"

Justin added, "Love Always, Your baby boys and the big kid you said yes to."

The Jonas Brothers singer shared this pic of his wife with daughter Malti Marie Chopra Jonas, writing, "Happy Mother's Day my love. You are an incredible mother. You light up me and MM's world every day."

Mother's Day 2023 fell on the 19th birthday of Gwyneth and ex Chris Martin's eldest child, daughter Apple Martin. The actress, who also shares son Moses Martin, 17, with the Coldplay frontman, shared pics of herself with both kids and her own mother, actress Blythe Danner, on her Instagram Stories and a special birthday tribute to Apple on her grid.

"Happy Birthday my angel," the Oscar winner wrote. "Thank you for sharing your birthday this year with Mother's Day, a fitting conjugation, a double celebration of you and what you have given to me- the GIFT of being your mom. I love you so deeply and wholly, it defies articulation. To behold you as a 19 year old woman fills my heart with almost unbearable love, pride and meaning! I can't take it! Thank you for making me brunch, I am making you dinner!! I love you so much, forever and ever, mama."