Let's make this birthday one to remember.

40 years old (Born on March 10, 1984)

Happy Birthday, Olivia Wilde! From diagnosing mysterious illnesses as the brilliant Dr. Remy "Thirteen" Hadley on 'House,' to directing groundbreaking films like "Booksmart," you've proven there's nothing you can't handle—whether it's medical mysteries or teenage angst.

Your talent and wit continue to inspire us all, making every role unforgettable. May your birthday be filled with laughter, joy, and absolutely no complicated medical jargon (unless Hugh Laurie insists). Here's hoping this year brings even more success—and fewer fictional hospital visits!

Cheers to another fantastic trip around the sun; keep dazzling us both in front of and behind the camera!