Ashton Kutcher

Stephen J. Cohen/WireImage

It's only the most important day in headwear of the whole year! 

And this year the stars did not disappoint when they stepped out in Lousiville, Ky. yesterday for the annual Kentucky Derby. While the race's winner, I'll Have Another, certainly stole the limelight, our eyes were on stars like Ashton Kutcher and Miranda Lambert, who donned their best for their day out at Churchill Downs.

But most importantly: Who was rocking the best hat game?!

There were all sorts of stylish hats at this year's event, ranging from the largest of large (Cyndi Lauper!) to the floral numbers (Anne Nicole Smith's adorable daughter, Dannielynn!) and everything in between. 

Even the gentlemen got in on the action, with Ashton and Kellan Lutz both donning newsboy caps.

So now you must tell us, whose Derby style do you like best?! Perhaps E's own Coco, who sported a pretty in pink confection, or Ms. Lambert's down South chic look? 

Or maybe it was one of the other fab looks—check them all out in our Kentucky Derby 2012: Hats Off to the Horses gallery and sound off in the comments!

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