Asos edition satin bardot maxi dress with full skirt in dusky blue size 4 & 6

satin bardot maxi dress with full skirt in dusky blue Asos size 4. Fits more like a 2. Asos size 6 also runs small The size 6 has not been altered The size 4 was hemmed to my height 5’2 wearing 3.5 inch heels Has been dry cleaned. I also have an asos size 6