How is Jeffrey's reaction to Heidi's coat different from everyone else's in the novel, Just Be Gorgeous?

Everyone from taxi drivers to people on the street disparagingly comment on the long man's overcoat that Heidi bought at a thrift shop. Yet the first thing Jeffrey says after they introduce themselves is, "That's a divine coat. Where did you get it?" Jeffrey's appreciation of Heidi's style is one of the factors that cements their friendship.