Spring 2013's 15 must-have fashion essentials

If Céline Fall 2013 and Madewell had a baby... Sloan Crew Neck Sweater, $365, Equipment, modaoperandi.com

These are going to be bigger than colored denim, we swear. Jeans With Patches, $79.90, zara.com

For layering under a lightweight pullover. Long-Sleeve Drop-Waist Poplin Shirtdress, $690, Thakoon, neimanmarcus.com

Like you raided Sofia Coppola's closet in the '90s. Silk Satin Slip Dress, $350, alexanderwangs.com

A blazer you'll want to wear outside the office. X-Ertion Jacket, $445, VPL, lagarconne.com

The perfect white jean: denim that's soft (but not jegging-y) with a fit that's slim (but not too skinny). "Paris" jean, $180, mih-jeans.com

Wear with faded denim, with a crisp pencil skirt, with everything. "bonit" printed silk top, $345, theyskens' theory, netaporter.com

Instead of army green, choose a camel jacket as your wear-with-everything topper this season. It's just as versatile, but feels a little fresher. Parka with collar enclosure, $89.90, zara.com

Swingy and sweet, but easy to balance out with a utilitarian jacket. You'll want to wear it every day. Elizabeth dress, $375, girl. by band of outsiders, lagarconne.com

Thanks to Marc Jacobs, bold stripes are the thing this spring. Test out the trend with this skirt: it's mod, yes, but also slightly soft and feminine. Pencil wrap skirt, $168, jcrew.com