Let's make this birthday one to remember.

39 years old (Born on June 10, 1985)

Happy Birthday, Kaia Kanepi! From Estonia to courts worldwide, you've served up thrills and surprises—especially when you stormed into the top 15 back in August 2012. Your powerful forehand has left opponents speechless (and occasionally ducking for cover), making every match a must-watch event.

Here's wishing you another year filled with aces on court and laughter off it. May your birthday celebrations be as memorable as your epic Grand Slam runs that have kept fans cheering loudly through the years. Keep smashing records—and tennis balls—with style; after all, age is just a number... ranking points are forever!