Sweetheart neckline, mermaid cut, princess seams, sheer/illusion keyhole back, spaghetti straps, and cathedral length train. 
Beading on bodice and straps. Lace/sequin detailing on back and train. 
Dress is size 10, street size 6. 

Has been altered to fit the below dimensions: 
Bust: 36" 
Waist: 30"
Hips: 44"
Height: 5'5" with 1.5" heels

Additional alterations: cups added, bustle ties in place (pictured), but would need to be fixed, bustle buttons remain in tact. 

Dress purchased in December 2021 - originally $1600. It has been professionally cleaned since wear. 
There is one very small snag in the train (pictured in my hand and location circled in following photo), and a few very minor spots that could not be removed when cleaned (example also pictured with circle - they are very faint but am trying to be transparent about the current condition of the dress). Otherwise it is in like new condition, still stunning! The photos of the dress hanging are all post - wedding.