An elegant evening gown from Adrianna Papell  for your next gala. 
size is a US ladies 8,   UK 12,   European 40,  German 38, Spain 42,  Italian 44 and an Austrian 12. Hopefully one of those should fit.

18" across the top, 15" across at the bottom of the bust, 18" across the waist area, about 50" long, and there is some stretch overall.