High Neck Black Lace Dress with Slit up Leg

This is a black lace dress with a high neck, keyhole in the back (no zipper), slit up center of the front, and nude slip underneath Prom / Homecoming / Wedding I got this from a boutique in Arizona and don’t see any brand tag on it The size says Medium (but I’d say this is a XS/Small) This has only been worn once- the only problems I could find was that a small portion of the lace has lifted off the strap on one side (pictured)