Criminal Sentence 203: It's Not a Dress You Want

From a clothing Web site:

"With it's crisp linen and clean pintucks, you're sure to feel that spring is in the air decked in this effortlessly chic shift dress."

The dress sounds lovely, but the "it's" doesn't. "It's" is an abbreviation for "it is" or "it has," and that's not what the "it's" in this sentence should say. It should be "its," which is a possessive adjective.

I know it's easy to be careless, but I'd rather you were careful.