Unless otherwise noted in a dress's description, we cannot make any customizations that alter the design of the dress. Our designers and tailors work with specific patterns to ensure that every dress is top quality, so to keep that in check, we do not offer customizations that otherwise change the design, which would include removing sashes or bows, adding or subtracting length, etc.
If you spot a dress in a particular length but wish it was shorter/longer, there's a good chance that we offer the same or similar dress in a different length. If we don't, unfortunately, there's not much we can do. So sorry, love!