Ashley Tisdale, Julianne Hough, Ashley Madekwe

Jon Kopaloff/FilmMagic

Wrapping up the season in true style, celebrities hit InStyle's 2013 Summer Soiree dressed in bold hues and prints.

Revenge actress Ashley Madekwe shined bright in a plunging Diane von Furstenberg jumpsuit with vintage Chanel belt and Saint Laurent sandals.

Also sipping on Evian, which sponsored the event, while dressed in a sizzling hue was Julianne Hough, who paired a white Bec & Bridge top with an orange Halston Heritage skirt.

Crystal Reed, Camilla Luddington, Shenae Grimes, Brittany Snow

Jon Kopaloff/FilmMagic

Not to be outdone, Ashley Tisdale didn't stick with just one eye-popping color, she rocked a rainbow of neon shades by opting for a Clover Canyon mini. Perhaps the star was trying to distract from her massive new sparkler (not likely, considering the size of the rock!). The actress was accompanied by fiancé Christopher French, which was the first time the couple has hit the red carpet since announcing their engagement this weekend.

Another star who made the event a date night? Newlyweds Shenae Grimes and Josh Beech. The 90210 actress went with a simple black-and-white striped top with leather shorts.

Rounding out the night's chic celebs was Brittany Snow, who added a pop of color to her Lela Rose frock by carrying an electric orange Orton clutch. Actress Crystal Reed also went with neon accessories. The Teen Wolf star paired her floral Dolce & Gabbana sheath with chartreuse pumps and Danielle Queller pink sapphire earrings. And Camilla Luddington flaunted her tone tummy in a Paper London crop top and skirt combo.

Which of last night's looks was your favorite?

PHOTOS: More red carpet events from this week

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