The singular possessive form of the word “dress” is “dress’s.” This form is used to indicate that something belongs to or is associated with a single dress.
For example, if you want to talk about the style of a particular dress, you might say, “That is the dress’s unique design.” This shows that the design belongs to that specific dress.
In English, to form the possessive of a singular noun, you typically add an apostrophe followed by the letter “s.” Hence, “dress” becomes “dress’s” when indicating possession.