No tags/Denim look dress fitted/belted/sleeveless/sweet heart/below the knee

Purchased from Le Chateau Entrepot in 2009-2010. For $79.95, it had tags, they had items like that sometimes. No idea what the material is. 🤷🏾‍♀️ It's a gorgeous dress, always gave me retro vibes. Fitted with some stretch, like a jegging material kinda. Dark gray, and has a bit of sheen. Stich detail on the bust, defined waist. The belt is removable, with a dark gray clasp. Darts and detailing for a stunning fit and definition. I was a size 8US/Medium at the time about 145-155 lbs. 36C bust. I'm 5"9, this dress hit me a few inches below my knees.I had a well-defined waist and hips. It was dry-cleaned before being stored in a vacuum bag 6-7 years ago. Excellent condition. Was steamed for pictures. Measurements were taken flat from seam to seam.Listed here I. order of photos posted. Shoulder Seam to hem=41in/104.14cm Underarm seam to hem=34.5in/87.63cm Chest=16in/40.64cm Waist= 14.5in/36.83cm Hips=18in/45.72 cm Back from top of neck to hem=41.5in/105.41cm Back from top of neck to top of waist seam=12in/30.48cm. Truly a dress I LOVE, hate to get to part with it, but it doesn't fit, and hasn't for years. I want it to get worn and not live in my closet to be looked at with longing 😁 Don't hesitate to ask questions or more pics/measurements. Smoke free house