Mother's Day takes on a whole new meaning once you actually become a mom. This past Sunday, these celebrity first and second-time mothers took to Instagram to share their special family moments with their new babes on the holiday, while some famous doting daddies also posted photos and shout outs to their wives across social media. From Jessica Biel to Chrissy Teigen to Blake Lively to the whole Kardashian klan, this is how some of our favorite stars celebrated the big day. See the sweet photos below!
Above: One of Hollywood's most adorable married pairs, Justin Timberlake and Jessica Biel, shared the same photo — a super cute snap of the new mom holding their baby boy, Silas Randall, clad in an adorable "I Love Mom" onesie (which looks very similar to the "I little Silas wore last Father's Day!) — on Instagram to commemorate Mother's Day, but with two very, very different captions. Jessica posted hers with a sweet callout to her mama, as well as all the moms out there: "Happy Mother's Day to you, Mom. I only, just now, understand what you did for me. And to all moms everywhere, I'm having a champagne in your honor. And when I say champagne I mean seltzer water cause mama's gotta do carpool in the am. #momlife" Her other half posted a similar message to his regram, but with a slightly different message: "M.I.L.F. Alert!!!! Happy Mother's Day to this AMAZING MOM AND WIFE. And, to all of the Mother's out there... You keep the World turning!! Hope every single one of you has an amazing day! --JT"
Photo: Courtesy John Legend via [Instagram](https://www.instagram.com/p/BFKGQ9kESq5/?taken-by=johnlegend&hl=en)
New father John Legend took to Instagram to celebrate his wife, new mom Chrissy Teigen, sharing several photos of the supermodel and their adorable newborn daughter Luna, who even sported a "Happy 1st Mother's Day" onesie in one snap. In the other photos, his wife is pictured cuddling with baby Luna on a bed as well as in the kitchen (in a crop top, no less!) cooking Mother's Day brunch. John gushed, "To my wonderful wife @chrissyteigen, Luna and I are so lucky to have you in our lives. If our daughter can be even half as awesome as you, I will be so happy and proud. Happy 1st Mother's Day!"
Photo: Courtesy Coco via [Instagram](https://www.instagram.com/p/BFJ6y9vBQ65/?taken-by=coco)
In the spirit of Mother's Day, new mom Coco shared a stunning throwback photo from three days before she gave birth to daughter Chanel, with husband Ice T. The stunning photo of the mom-to-be shows the gorgeous glamour model cradling her belly in sexy lingerie. She said, 'Being a mother is the best gift in the world! Happy mother's day to all those badass moms out there! (This was taken 3 days before I gave birth #37 weekspregnant)
Mom of one with one on the way, Blake Lively, shared this colorful photo of all the beautiful bouquets she was gifted by her hubby, Ryan Reynolds. After tying the knot in September 2012, Blake and Ryan welcomed daughter James, now 16 months old, and are excitedly awaiting baby no. 2's arrival. Blake also took the time to sweetly acknowledge "the two best mama's" she knows, her mother and her sister.
Facebook creator Mark Zuckerberg headed to Instagram to post homage to his wife Priscilla with the words, "Priscilla, happy first Mother's Day! You hold us up so we can experience the greatest adventures in life," alongside a heartwarming photo of Priscilla holding up the hands a standing baby girl Maxima, 5 months.
New dad Michael Phelps also had some serious celebrating to do on the special holiday. He and his fiancé, Nicole Johnson, welcomed their first child together, baby boy Boomer Robert Phelps, on May 5 — just in time for Mother's Day. The Olympic swimmer shared a touching black and white photo of his soon-to-be wife and their newborn son. "Happy Mother's Day @nicole.m.johnson !!! The first one!! Love you so much!!" he captioned the photo, which appears to be taken at the same time as this adorable pic of the shirtless Olympian and his newborn baby.
The ever-expanding Kardashian clan celebrated the holiday in style. Kanye West took the cake for most extravagant gift, by surprising his wife, second-time mom Kim Kardashian West, with a symphony in their living room...literally. Kim snapped segments of the private concert while holding daughter North, 2. The couple is also proud parents to infant son Saint, born this past December.
Newly engaged brother Rob shared special shout-outs to his "supermom" sisters, and paid a special tribute to his pregnant fiancé Blac Chyna by posting a cozy photo of the couple captioned, "And last but not least, happy mamas day to this beautiful Mama. I fell in Love with her immediately because of how great of a mom she is and now I'm looking forward to starting a family with her! Thank you Chy for everything you do for me," complete with a bride emoji. Chyna, who is also mom to son King, 3, and Kardashian announced just this week they were expecting a baby of their own.
This was also Kourtney's first time celebrating the day as a mom of three. She posted a sweet photo of her three beautiful babes Mason, Penelope, and Reign accompanied by her thoughts, "Feeling overwhelmed with love and blessings being able to be mommy to these three angel babies. My favorite role in life so far is being a mommy and getting to see life through their eyes. Happy Mother's Day!"