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Kentucky Derby, Lauren Conrad

Stephen Lovekin/WireImage

It's that time of year again!

During the 139th Kentucky Derby, held at the famed track Churchill Downs in Louisville yesterday, stars brought out their most stylish—and largest—hats to make a wardrobe statement.

Between sipping on mint juleps and partying at the GQ Derby Style Event, celebs like Lauren Conrad, Miranda Lambert and Lance Bass (just to name a few) made an appearance. 

But you don't have to take our word for it, just check out all the stylish starss for yourselves.