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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.

MORE: 
• Behind Maggie Gyllenhaal’s Pixie Cut
• Michelle Williams’s Ruby Slipper Style
• See Kate Mara’s Best Looks Ever!

There is no accessory more important in the classic Wizard of Oz fairytale than the click-your-heels-together-and-pray-for-home ruby slippers. And since Judy Garland’s 1939 originals are currently in the Academy Museum of Motion Pictures in Beverly Hills (thanks to some help from Leonardo DiCaprio), we asked our March cover girls—Oz the Great and Powerful stars Mila Kunis, Rachel Weisz, and Michelle Williams—for their 21st-century updates. Their picks:

MILA KUNIS
Pick: Chanel’s Ankle-Strap Pumps
Why: “Such a classy look! What really appeals to me is that they’d be equally gorgeous with jeans or something dressier.”
Where: $1,350; at select Chanel boutiques; visit chanel.com for locations.

MICHELLE WILLIAMS
Pick: Charlotte Olympia’s Clio Leopard Heels
Why: “The heels on this pair make me feel teetery-tottery—in a good way, like I’ve had a glass of Champagne!”
Where: $1,095; call 212-744-1842 or visit modaoperandi.com.

RACHEL WEISZ
Pick: Rag & Bone’s Classic Newbury Boot
Why: “I love Rag & Bone. Their stuff has a bit of edge but is also refined.”
Where: $495; at rag-bone.com.

Plus, snag the March issue of InStyle to read more about our cover ladies, on newsstands and downloadable for your tablets now. For a sneak peek, cilck “Inside the Cover Story” to read the five juiciest quotes from the issue.

MORE:
• First Look: HSN’s Oz-Inspired Collection Lookbook
• Video: Watch the Cover Girls in Action!
• Try on the Cover Girls’ Hairstyles!

• Download the new issue on your tablet:
• 1. iPad
• 2. Nook
• 3. Kindle
• 4. Google Play

Oz The Great and Powerful opens in theaters today! The stars, Rachel Weisz, Michelle Williams, and Mila Kunis are truly bewitching as witches in the movie, and we got the exclusive peek inside their off-screen magical lives when they posed for the cover of InStyle’s March issue. What truly makes Rachel Weisz happy? What does “no place like home” mean to Michelle Williams? What bothers Mila Kunis most about Hollywood? Click through to read the 5 juiciest quotes from InStyle‘s cover girls, and pick up the issue on newsstands now (and downloadable for your tablet, too!) to read the full story.