POPSUGAR Fashion Sienna Miller Sheath Definition: Sheath by Fashion 7/16/07 0 Shares Like us on Facebook Sign up for our daily newsletter > Follow us on Pinterest Sheath n. Simple, straight dress, somewhat fitted at waist using vertical darts. No belt or waistband. Usually mid-calf or shorter. Works well in sleeveless styles on well-toned bodies, case in point: Mademoiselle Sienna Miller. Source Read More SheathStyle GlossarySienna Miller Sienna Miller You Won't Believe These 28 Stars Were Once Abercrombie Models Bradley Cooper Plays Up the Sexy Bad Boy Thing in the New Trailer For Burnt Sienna Miller and Her Sexy Costars Hit the Red Carpet in Spain Sienna Miller Just Ditched Her Blond Bob For a Hot Fall Hair Color POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Stay Stylish With OurFashion and Beauty Newsletter Personalize Fashion and Beauty News Beauty Tips Street Style Celebrity Style Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR. QueenMargot 8 years I like the dress, but it doesn't fit good on her. kayden 8 years This is a nice black dress but, you must have the body shape for a dress like this. If your a hippy person this dress may not be best for you to wear. kayden 8 years This is a nice black dress but, you must have the body shape for a dress like this.If your a hippy person this dress may not be best for you to wear. cyrizzle 8 years i don't think it's that flattering on her. makes her look a bit pudgy in the middle... prosecco-in-the-park 8 years I'm not a big fan on sheath dresses, I feel like they make me look lumpy because of my chest =(. But I love Sienna!