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We went to prom with Kate Young last night! We were just one of the celebrity stylist’s many dates—along with her guests-slash-clients Kate Mara, Michelle Williams, and Maggie Gyllenhaal—for an evening that included disco balls, pink champagne, and streamer-covered bleachers at the elementary school-turned-event venue The Old School in New York to celebrate the new Kate Young for Target collaboration. “The collection was inspired mainly by the magic of getting dressed up and the feeling of hope that comes with putting on a fancy dress and going out for an evening,” Young told InStyle.com of the line, which is full of pieces for every spring party, from weddings to prom. Gyllenhaal, along with the rest of the star guests, served as celebrity models showing off the designs while grooving to tunes spun by DJ Atlanta de Cadenet Taylor, daughter of Duran Duran’s John Taylor. “[Young’s] own personal style is really down to earth, smart, and sexy,” said Gyllenhaal. “It really comes through in the clothes.” Shop the festive collection at Target stores and online at target.com on April 14.

Plus, click through the gallery to see a full preview of her collection.

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Target is collaborating with super-stylist Kate Young, and we have the exclusive first look at the entire lookbook! The stylist to the stars, who counts InStyle cover girls Michelle Williams, Rachel Weisz, and Natalie Portman as clients, is “thrilled” to be the retailer’s first stylist collaborator, and credits her years of experience in designer ateliers as the key to knowing just how to create a collection of ultra-chic looks for day and night. “I am used to thinking a step ahead, envisioning the final looks for my clients, so I approached this collection much in the same way—I even attended the first design meeting with sketches in hand!” And now, after all the red carpet events she’s helped her girls stun at, she’s giving you the chance to be the trendsetter. “Kate Young for Target allows women with all different style preferences to mix-and-match the pieces to create endless ensembles—to challenge them to step outside of the box and have fun experimenting with fashion.” So go for it! Click through to see every look from Young’s Target collection, and shop it all in Target stores and target.com starting Sunday, April 14.