Meet the New Celebrity Babies of 2018

Once Upon a Time's Emilie de Ravin shared a photo of her new baby boy, Theodore Kubrick de Ravin-Bilitch, on Instagram. "Theodore Kubrick de Ravin-Bilitch was born at home on December 9th," she wrote in the caption. "Welcome to the world beautiful boy! We're so excited you're finally out here to play with us! We love you so so much Theo xoxoxo." Theodore is Emilie's second child with fiancé Eric Bilitch.

Avengers: Infinity War and Deadpool 2 star Josh Brolin and his wife, Kathryn Brolin, welcomed their first child together on Nov. 4. Kathryn posted a cute video of their new daughter on Instagram, saying, "Our family's newest (and tiniest) member. Westlyn Reign Brolin, I love you so much already. Nothing compares to this... My heart is totally different forever. @joshbrolin thanks for this little life of ours." Josh is already dad to two other children — Eden, 24, and Trevor, 30 — from his first marriage to actress Alice Adair.

Shameless star Jeremy Allen White and his longtime girlfriend Addison Timlin welcomed a baby girl named Ezer Billie White on Oct. 20. Addison announced their daughter's birth on Instagram, writing, "Welcome to the world baby girl, it just got so much brighter."

On Oct. 15, The Handmaid's Tale star welcomed her first child with husband Tim Loden on Instagram. "We have been blessed with the greatest joy of our lives, our baby boy," Yvonne wrote in the caption. "Welcome to the world Peanut, your parents love you beyond measure and you are already my little dream boat."

Pete Wentz and longtime girlfriend Meagan Camper welcomed a little girl in May. "So excited to introduce Marvel Jane Wentz," the Fallout Boy singer wrote on Instagram. "Feeling so grateful that she's here... annnnd she's already ready to takeover the world ❤️🌎 happy Mother's Day @meagancamper and all the moms out there. We ❤️ you."

Grey's Anatomy star Kevin McKidd and his wife Arielle Goldrath welcomed their first child together, a baby boy, in May. "On this beautiful Mother's Day evening... Welcome- little Aiden to our family and to the World!" he wrote on Instagram. "Arielle, you're the most amazing mother and I love you both so much ! #happymothersday #forever #weeAiden #Arielle #newlife" Kevin is already dad to daughter Iona, 16, and son Joseph, 18, from his previous marriage to Jane Parker.

Jamie-Lynn Sigler and her husband, Cutter Dykstra, welcomed their second child on Jan. 15. "He's here," the actress wrote alongside photos of her newborn and her 5-year-old son Beau Kyle. "Jack Adam Dykstra we will talk about your tardiness eventually, but for now we've got a lot of love to give. Thanks to my besties for helping me laugh and smile and to my husband for just being my rock."

Singer Christina Perri and her husband, Paul Costabile, welcomed their first child on Jan. 17. "The greatest gift we've ever known!!!" Paul wrote on Instagram. "Welcome to the world Carmella Stanley Costabile born today. Mom and our little principessa are doing great. Dad can't stop crying!"

Brooklyn Decker announced the arrival of her second child with Andy Roddick in January. The model gave a sweet look at her little one on Instagram, writing, "A newborn, a toddler, a dog in a cone, a dog with a tumor but I'm having a good hair day so it's fine we're fine I'm fine."

Lin-Manuel Miranda and his wife, Vanessa Nadal, welcomed Francisco Miranda in February. Lin-Manuel tweeted a photo of his wife and newborn son from the hospital room. The couple are already parents to their three-year-old son, Sebastian.

Jack Osbourne and his wife, Lisa Osbourne, welcomed their third child together on Feb. 3. "Hey everyone meet Minnie!" he wrote on Instagram. "She's the newest member of my girls only squad. (andy stole the 'i' from inch) #girlsrule #playerscurse #happydaddy #hatchling"

Lady Antebellum's Hillary Scott gave a precious look at her twin daughters, whom she and husband Chris Tyrrell welcomed on Jan. 29. "Our identical little ladies Betsy Mack and Emory JoAnn were born January 29th around 2am, 5.5lbs each and 17 inches long," she wrote on Instagram. "Their Daddy took this picture when they were two days old napping on Mama. Their favorite place to be, other than on me, is nose to nose and cheek to cheek. Big Sister Eisele's heart is full of love for her sisters and she is already such an incredible little helper. One week in and we are definitely seeing double! Double the blessing, double the tired, double the laundry, but double the love! ~Tyrrell Party of Five."

Aaron Paul and Lauren Parsekian welcomed a baby girl in February. "There are no words that will ever be able to explain what just happened to my heart," Lauren wrote alongside a precious photo of their newborn.

The "Blurred Lines" singer welcomed his first child with his girlfriend, April Love Geary, a baby girl named Mia Love, on Feb. 22. Robin has a 8-year-old son named Julian from his previous marriage with actress Paula Patton.

Hocus Pocus actress Vinessa Shaw and her husband, Kristopher Gifford, welcomed a baby boy in February. "After a long labor with many complications, Baby Jack was finally born two and a half weeks after his due date on 2.20.2018 weighing in at 9lbs 9oz!!! 🥊!" she wrote alongside a photo of her holding her newborn's hand. "Needless to say, we are overjoyed about our new little addition! He and I went through a lot, as the plans of having a natural birth were derailed. But with the support of so many people: family, midwives, and hospital staff, we came out victorious, healthy, and happy!...Ok that's all. Too tired to write anything else. Nap time! 😴😴😴#happymommy #happyfamily #champions"

Kylie Jenner and Travis Scott welcomed their first child, a baby girl, on Feb. 1. After months of speculation, the 21-year-old simultaneously confirmed her pregnancy and the arrival of her little with a beautiful video.

John Stamos and his wife Caitlin McHugh welcomed their first child, a son named after his late father, in April.

Kym Johnson and Robert Herjavec, who first met on Dancing With the Stars, welcomed a twin boy and girl in April. "I never thought my heart could feel so full," the dancing pro wrote on Instagram. "We're so in love with our little angels. Born at 7.44am and 7.45am 4/23/18."

Cher Lloyd and her husband Craig Monk welcomed their first child, a baby girl named Delilah-Rae, in May. "Our baby girl is here!" she wrote alongside a photo of her newborn. "We are so in love… Delilah-Rae 25.05.18."

On June 5, Haylie Duff and her fiancé Matt Rosenberg welcomed a little girl named Lulu. The two are already parents to a 3-year-old daughter named, Ryan.

Former WWE wrestler Stacy Keibler welcomed her second child, Bodhi Brooks, with husband Jared Pobre in June. They announced the news with a sweet shot of the family's hands, including little Bodhi's.

Former Laguna Beach star Alex Murrel Johnson and her husband Kyle Mark Johnson welcomed their second child, a little boy named Kase, on August 1. The couple are already parents to a 2-year-old son named Levi.

Tyrese Gibson and his wife Samantha welcomed a baby girl named Soraya on Oct. 1. The Fast & Furious star announced the exciting news on Instagram writing, "Father God we love you for delivering on your promise princess Soraya Lee Gibson is here . . . 8 pounds 6 Oz our lives just changed forever." While this is the couple's first child together, it is Tyrese's second child. The actor is also father to 11-year-old Shayla, whom he shares with his ex-wife Norma Mitchell.

Beauty guru Kat Von D and husband Leafar Seyer announced the arrival of their baby boy, Leafar Von D Reyes, on Dec. 2 in an Instagram post. "Thank you to all our beloved friends+family, fans+followers for your patience in us announcing his long awaited arrival," Kat added in the caption.