Celebrity Parents Haven and Hudson Are 1! Kym Johnson Herjavec Shares Photos from Her Twins' 'Special' Birthday The siblings celebrated in mom Kym Johnson Herjavec's native Australia, posing among colorful balloons before enjoying their own individual smash cakes By Jen Juneau Jen Juneau Twitter Jen Juneau is a digital news writer for PEOPLE. A '90s teen and horror film connoisseur, she started at the brand in 2016, after a decade of working as a technical writer and then moonlighting as a journalist beginning in 2013. Originally from New Orleans, Jen grew up both in NOLA and Florida and eventually attended the University of Central Florida in Orlando (still her home base!), where she earned a bachelor's in English/technical communication, with a minor in magazine journalism. People Editorial Guidelines Published on April 24, 2019 01:42 PM Share Tweet Pin Email Happy birthday, Haven Mae and Hudson Robert! Kym Johnson Herjavec and husband Robert Herjavec marked their twins’ first big age milestone on Tuesday, when the proud mom shared a gallery of snapshots from their birthday bash on Instagram. The siblings were all smiles as they posed with their parents in Johnson Herjavec’s native Australia, among a collection of colorful balloons (including a big gold “1”), before enjoying their own individual smash cakes. Each baby also had a candy-covered dome-shaped cake that bore their name, which sat under a festive balloon arch on an impressive dessert table covered with cupcakes. “So special celebrating Haven and Hudson turning 1 with our Aussie Family and friends 💕👼👼🇦🇺🎉🎂,” wrote Johnson Herjavec, 42, shouting out two of the party’s vendors: Sydney SmashCakes and Bubble Moo Balloons. Kym Herjavec/Instagram Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Parents newsletter. Kym Herjavec/Instagram Haven and Hudson Herjavec’s birthday party. Kym Herjavec/Instagram Haven Herjavec. Kym Herjavec/Instagram Hudson Herjavec. Kym Herjavec/Instagram New Mom Kym Johnson Herjavec Shares Sweet Throwback Photo Taken After Twins’ Birth: “Can’t Believe How Lucky I Am” From their first pool trips to adorable Halloween costumes, meeting celebrities and more, Haven and Hudson have had an eventful first year of life. In October, they even made an appearance on their dad’s competition series Shark Tank, proving themselves quite the naturals on the small screen after they surprised Herjavec, 56, with their visit. But new motherhood has had its challenges for Johnson Herjavec, too. In September, the Dancing with the Stars pro revealed that she was suffering from tendinitis in her wrist. “I don’t know how I’m going to manage picking up two babies and doing all of that with this,” she said of her back splint, adding, “I’ve basically got to wear this thing for two weeks. Let’s see how this goes.” Robert and Kym Johnson Herjavec with their twins. Kym Herjavec/Instagram RELATED VIDEO: Robert and Kym Johnson Herjavec Reveal They’re Having a Boy and a Girl In February, Johnson Herjavec showed off her impressive fitness transformation just nine months after delivering her son and daughter, who are her first children. (Herjavec is also dad to three children from a previous marriage.) Sharing a side-by-side photo to her Instagram Story, she wore a black bikini in both images — except the star traded her baby bump in the left picture for her son and daughter in the right, showing off her toned abs. The proud mama captioned the shots, “#9monthchallenge,” putting her own twist on the viral #10YearChallenge, which gave dozens of stars a chance to flaunt how far they’ve come (or not) in the last decade.