elegant jumpsuit with detachable skirt

Description

I bought this outfit for my son's wedding.  Love the color. Love the fabric.  I was very surprised and pleased with the quality.  However, it is short waisted and tight through my ribcage.  It is a size 8, but might fit someone sized 6 better,
I am 5'8' 140 lbs.
The neckline is very deep in the front and back.
I am happy to answer any questions that you might have.