Let's make this birthday one to remember.

51 years old (Born on March 10, 1974)

Happy Birthday to the incredible Dr. Jennifer Arnold—neonatologist extraordinaire, reality TV star, and queen of multitasking! Whether you're saving tiny lives at Texas Children's Hospital or charming us all alongside Bill on "The Little Couple," you always manage to make it look easy (and stylish!). Seriously, how do you juggle medical miracles and reality TV fame without breaking a sweat?

Here's wishing you another year filled with laughter, love, and plenty of coffee breaks between rounds. May your birthday be as joyful as your best family adventures—and may Bill spoil you rotten today! Cheers to more unforgettable moments ahead!