green dresses to wear to a wedding Line Spaghetti Straps Dark Long Guest Dress this sophisticated dress will be your partner 10 Must-Have Emerald Green Dresses

Heres what reads as Art Deco glamour at prom: Beading and rhinestones especially geometric or floral patterns across the bodice Lace overlays sheer lace over satin creates that layered, vintage-luxe effect Sequin embroidery scattered or patterned, not all-over coverage Mermaid or column silhouettes sleek and body-skimming, very 1920s in shape Sweetheart or V-necklines period-appropriate without being theatrical Gold, champagne, black, and ivory the true Gatsby color palette And heres what tips it into costume territory best to avoid: Headbands with large feathers worn as the centerpiece of your look Fringed fabric from hem to bust on an otherwise undetailed dress Period-accurate dropped waist silhouettes that look shapeless on most frames Vintage brooches, elbow gloves, and cigarette holders all at once One strong Art Deco element is enough

"You can't really change the dress that much," says Durran, who just received her seventh Oscar nomination for Little Women , also starring Watson

Most events lean towards 'smart casual' to 'dressy casual.' Think elegant, but comfortable enough to sit and fully immerse yourself in the music

If you love a creamy dressing, this is a game changer