Marina Rinaldi Persona navy blue/white trim flowing A line long dress/gown, pockets in side seam, as shown in photo, overlapping side 14" slits, slimming design, no size tag or fabric content, but this is her famous crepe envers satin-which is satin on the inside, crepe on the out, drapes wonderfully, travels well.
The gown is unlined, back zipper entry, fabric is opaque, but multi-seasonal, attractive squared off V neckline with a double chiffon inset matching the 3/4 sleeve which is sheer or semi sheer as it is a single layer, that compliments the rich crepe fabric.
The sleeve has a 5" slit from the hem on the outer side of the sleeve, it's about 16 1/4" long from the shoulder down, it's a straight sleeve but full enough to accommodate most, the circumference at the slit, which again is 5" above the sleeve bottom is 16".
Although there are 14" side slits, they overlap, which I tried to show in the one of the last few photos.
In addition the photo which includes my hand shows one of the side pockets.
Measures up to be a 20W or 2X, following are the flat external measurements, some of which are doubled:
Bust-pit to pit doubled-51 1/2" Waist Area-53 1/2" Hip Area-58"
Measurement below hip-14" up from hem where the slit begins-61"