Meet the New Celebrity Babies of 2018

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.