From my own closet. Love this piece, but time to let go! Authentic Fredericks of Hollywood. I bought in approx. 1978-79. A one piece disco jumpsuit. Spaghetti straps that criss cross and tie at back. Bodice is ruched. I had cut out the shelf bra. Still great to wear with a strapless bra. Back zipper. The hip area is cut wide and drapes (see pics). Can be worn with the gathered hip fabric just draped down, or the points of the fabric tucked in as pockets! The legs taper down to ankles. There is some slight pilling at bottom of legs (see pic). 
A true piece of history! Disco era!
Size tag is removed but I believe to be a size 8/10. Check following measurements for fit.
Under arm to under arm, across laying flat approx. 15.5". Waist, across laying flat 13" (26"). Hips 23" ++. Inseam approx. 29.5".

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