navy blue mermaid dress KissProm Strapless Satin Long Prom With Slit, / 14 Hollow to floor Navy Blue Lace V-neck Off

The Smurfs star wore her hair down, letting it freely flow behind her, and no jewelry, save for a gold wristlet watch

In misses and some plus sizes, this long formal dress has thin shoulder straps that lead to the open back, while the hip-hugging long skirt has a thigh-high side slit and a small train that brings on the drama

Like Swift, Delevingne, 31, also opted for an all-black look with a suave velvet suit and sneakers

Details FAQs & Polices black A-line beaded satin formal long prom dress Description of the long prom dress: For Material: elastic satin, pongee

Lace overlays on structured bases add sophistication

I wanted to go with a casual look for the first outfit, and I wanted to make it easy and simple to replicate