NWT Athleta Venture Out Dress in Black, sz 6P.  Retailed for $119.

Measurements as in photos.  Smoke-free, pet-free home.

Online description:

Product details:
    FOR: Hike, long distance, short distance, and trail running
    FEEL: Featherweight Stretch is made with recycled polyester and feels light as air
    FAVE: Multi-fabric piecing for added breathablity
    Built-in shorts for additional coverage

Fit and sizing:
    Semi-fitted, skims easily over the body
    Body length in size medium: Regular: 33"

Fabric and Care:
    86% Recycled Polyester/14% Spandex
    RECYCLED MATERIAL: Made from recycled polyester, a material sourced from post-consumer plastic bottles that helps lessen our impact on the world
    BREATHABLE: Airflow moves easily through the garment
    WRINKLE-RESISTANT: Packable fabric that airs wrinkles out easily
    RATED UPF 50+ (Excellent Protection)
    QUICK-DRYING: Dries in a flash for ultimate comfort when breaking a sweat
    ABRASION-RESISTANT: Resists snags and tears
    Machine wash inside out
    Imported.