Happy 44th birthday to the always beautiful and talented Sienna Miller! It's hard to believe that you're another year older, but we're sure you're aging like a fine wine. Here's to another year of amazing performances, killer fashion choices, and plenty of laughter. And hey, on the bright side, now you can officially say you're in your mid-40s. You're just getting better with age, Sienna. Cheers to you and may your birthday be as fabulous as you are!