MINNEAPOLIS (WCCO) — Target has apologized to customers after some took issue with how clothing meant for plus-sized shoppers was labeled.

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A shopper noticed that two identical dresses were branded differently on Target’s website. The color of the standard-sized version of the dress was termed “dark heather gray,” whereas the dress meant for plus-sized women was labeled “manatee gray.”

A manatee, as you may know, is a large sea creature.

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In a statement to Forbes, Target said: “We apologize for any discomfort this might have caused and are working to update the name of the dress to reflect Dark Heather Gray. This was an unfortunate oversight.”

Target added that “manatee gray” is the name of a color used to describe many other Target products. But in this case, there were two buyers for the same type of dress who didn’t communicate when picking color names.

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The customer who originally brought the labels to the retailer’s attention later tweeted that she wasn’t expecting the apology, and that she’s still a fan of Target.