Born on June 8, 1966, in Spring Valley, New York, Julianna Margulies didn’t exactly burst onto the scene with flashing lights and red carpets. Her early career was more of a slow, steady climb—small roles, bit parts, and plenty of auditions where she probably heard the phrase, “We’ll be in touch,” more times than she’d care to remember.

Raised in a creative family—her mother was a ballet dancer and eurythmy teacher—Julianna spent much of her childhood moving between the United States and Europe. That kind of upbringing gave her a broad perspective on life and culture, even if it meant constantly being the “new kid” at school. She later attended Sarah Lawrence College, where she studied art history before fully committing to acting.

Her early acting career included commercials and small television roles, along with a minor part in the 1991 action film Out for Justice starring Steven Seagal. It wasn’t exactly a breakout moment, but it was a foot in the door—and in Hollywood, that’s half the battle.

Then came the mid-1990s, a time of dial-up internet, oversized flannel shirts, and hairstyles that looked like they’d lost a bet. For Julianna Margulies, though, it was also the decade that changed everything. In 1994, she landed the role of Nurse Carol Hathaway on the new medical drama ER. Originally, her character was only supposed to appear in the pilot—and, in fact, the script called for her to die. But test audiences loved her so much that the producers rewrote the storyline and brought her back as a full-time cast member.

It turned out to be one of the best decisions in television history. ER became a massive hit, and Julianna’s performance earned her a Primetime Emmy Award in 1995. Her character’s on-again, off-again romance with George Clooney’s Dr. Doug Ross became one of the show’s most beloved storylines. Suddenly, Julianna wasn’t just another actress trying to make it—she was a household name.

After leaving ER at the height of its popularity, she made a bold move by stepping away from long-term television roles for a while. She focused on film, theater, and guest appearances, choosing projects that interested her rather than simply chasing the biggest paycheck. It was a risky decision, but it showed her independence and confidence in her craft.

Then, in 2009, she returned to television in a major way with The Good Wife. Playing Alicia Florrick, a political spouse forced to rebuild her career and her life after her husband’s public scandal, Julianna delivered one of the most acclaimed performances of her career. The role earned her two more Primetime Emmy Awards and a Golden Globe. If ER made her a star, The Good Wife made her an icon of modern television drama.

Of course, not every project was a hit. The 2006 series Canterbury’s Law lasted only a handful of episodes before being canceled. And while Snakes on a Plane (2006) has since achieved cult-classic status, it wasn’t exactly showered with critical praise at the time. Still, being in a movie with Samuel L. Jackson shouting about reptiles at 30,000 feet is at least a memorable experience—if nothing else.

In recent years, Julianna has continued to take on challenging and varied roles. She appeared in the drama series Billions, playing a sharp, no-nonsense author and professor. She also starred in the National Geographic limited series The Hot Zone, portraying a virologist racing to contain a deadly outbreak—proof that she can handle legal drama, hospital corridors, and biological crises without missing a beat.

Offscreen, Julianna is known for her love of literature and the arts. She’s narrated audiobooks, supported numerous charitable causes, and spoken out on issues like women’s rights and medical research. She’s also been involved with organizations such as Project ALS, showing that her compassion extends well beyond her on-screen characters.

Through it all, Julianna Margulies has built a career defined by intelligence, strength, and quiet confidence. She’s never been the loudest star in the room—but she’s often the most memorable one.

So here’s to Julianna on her birthday: a performer who turned a one-episode role into a television legend, and who keeps proving that talent and good judgment never go out of style. Happy Birthday, Julianna!