The same design was worn by Megan Markle to her wedding with Price Harry in 2018.

Halter-neck sleeveless gown in white satin woven, with moderate stretch. Flared skirt with godets. Neckline dips to mid-back. Hook-and-bars and snaps at back neckline. Invisible zipper closure at back. Doubly lined with high-stretch elastic shapewear as innermost lining.
Label: Stella McCartney
Size Label: Removed
Date: 2018
Country of Origin: Italy

Approximate Measurements:
Chest: 28“
Waist: 26“
Hips: 34“
Length (center back neckline to hem): 50“