One of our favorite fashionistas, Lauren Conrad looked lovely in nude from head to toe, with a delicate hat to match.
Actress Krysten Ritter was all fair, with a neutral floral dress and black accessories. Unfortunately, the dress washes her out.
These ladies are all striped out, and we're loving the bold dress on Christa B. Allen.
We had to include a few photos of the Derby hats from this year's race! This fan's hat keeps the morning sun from her eyes with a rounded brim.
The NFL player wore a lavender pinstripe suit, and though Mecca tied the floral hue in with her hat, the bright orange was just too much of a clashing color.
Jason wasn't about to just let the ladies wear hats. Jenny's dress, hat, clutch -- really her entire outfit -- was one of our favorites of the day.
A little feather accent goes a long way, but we're not sure what's on the bottom of Star's skirt!
Roberts embraced one of the favored colors for spring: emerald. We love the classic silhouette of this dress and her thin black jacket for the chill in the air.
The former *NSYNC band member wore a bright pink gingham suit, with a bowtie to boot. It was a little much!
The country singer looked stunning in this strapless minidress with a full skirt and intricate cutouts.
Bright pastels for spring! This fan embraces all of the primary colors in her outfit, topping it off with robin's egg blue.
The supermodel looked stunning in a Zac Posen skirt suit and floral hat by Philip Treacy.
Anna Nicole Smith's daughter had a fun day with her father, dressed up like a sweet Southern belle, but her father's over-the-top ensemble makes our worst list.
Seymour was ravishing in red in this peplum dress with nude strappy heels.
Hagan added a wide-brimmed pop of gold to this all-black satin ensemble, and we can't help thinking of bumblebees.
This fan was willing to brave any elements for the Derby, good thing her hat shielded her from the rain.
What's black and white and lace all over? Angela's sweet dress and hat for the Derby.
McBride went for a sleek peplum dress with a black hat. We like her heels, but the dress bores us.
Another former *NSYNC member, making the 15 year-old in us swoon!
Newest NCAA champ, basketball player Petyon Siva from the Louisville University Cardinals looked dashing.
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While it has always been a huge event in the world of horse racing, the Kentucky Derby has also become quite the event in the world of style. Spectators flock to Churchill Downs, KY every year, eager to watch the horse race, and some perhaps even more eager to show off their creativity.
You've seen our look back at the craziest hats of Derbys past, now we've got the coverage of who attended this year's race. It's a two-day event all culminating in the final two minutes, and the stars who attended weren't afraid to be bold and bright.
Lauren Conrad kept it classic in a nude dress and heels, while Jane Seymour was ravishing in red. While we appreciate the creativity associated with finding the right hat (which comes first, the dress or the hat?), there were certainly a few missteps.
Click through the gallery to see our picks for best and worst of the Kentucky Derby!