While reflecting on her firstborn's birthday, Brittany Cartwright revealed on Instagram that Cruz is the best thing that's ever happened to her. The reality star shared photos from Cruz's trip to the baseball diamond, as well as an adorable video of her first few moments with her pride and joy. She started her birthday message, "This has been the best year of my life, I love this little boy more than I could have ever imagined. Being your mommy has brought so much joy & happiness in my life." The 33-year-old added that becoming Cruz's mom has changed her life for the better. After revealing that their first 365 days together flew by, Cartwright shares some qualities she cherishes about Cruz.

She closed, "You are the sweetest, cutest, funniest, smartest little boy. Mommy & Daddy love you more than you will ever know. Happy First Birthday my Son." While Cartwright and Taylor are arguably the most excited about Cruz's special day, the famous parents' fans took to the comments to share well wishes. One commenter even wrote, "Happy Birthday Cruz!!! It's been such a joy watching you grow and seeing your parents with you. You really are insanely adorable!!! Brittany & Jax — you are wonderful parents. Thank you for sharing so much with all of us!"