I'm ISO a black dress for a summer orchestra concert. I prefer midi or maxi length as I am a cellist. Short sleeves that allow movement (I have muscular arms so loose or stretchy better to fit. V necks suit me best and defined waist (between hourglass and pear shaped). UK size 14 and 5 ft 9 so if a longer length option that would be great. Can spend up to 80 pounds maybe a bit more if nice. But I never wear black usually so less expensive better. All leads appreciated!