Is there a difference in sizing between length options?Updated a month ago

Nope! The only thing that will change is the actual length of the skirt portion of the dress. For dresses with slits or skirt breaks, their overall length/height will vary depending on which length option you choose. The slit and skirt breaks on the 40 in length will be 2 in higher than the 43 in and 46 in lengths. The slit and skirt breaks on the 51 in length will be 3 in lower than the 43 in and 46 in lengths.