best dressed: kate young for target

who should be crowned queen at this prom-themed party?

It's no big secret that stylists can have as much--if not more--influence than the designers they're dressing people in. Look no further than Rachel Zoe for proof.

Or now, Kate Young. That's right: The woman who dresses cool girls like Michelle Williams is getting her own line at Target. The collection, featuring a range of party-ready dresses, jumpsuits, shoes, and accessories all under $100 (we'd describe it as hipster-girly red carpet-wear), doesn't hit stores until April 14, but it got a proper launch party last night. The theme was, rather appropriately, prom, with models arranged in pairs and after-school worthy snacks and drinks.

But it wasn't just the homecoming queen who showed up; many of Young's friends and clients were there to support her and the line. From Maggie Gyllenhaal to Kate Mara, Debby Ryan to Williams herself, it was a veritable who's-who of our favorite It Girls, many dressed in Kate Young for Target (notch, we know). Here are our favorites--click through the gallery and let us know whose look you're loving. And don't forget to pick up your own Kate Young pieces starting April 14 on!