Detail she's reportedly bought online at netaporte. for mrs. trump a few fashion missteps. >> we're seeing her undergoing a crash course in first lady 110. the derek lamb sweater photographed was slightly sheer. that's a little racy for a first lady, and probably wasn't intentional. >> reporter: and that dress the first lady wore on red heart day -- >> they hadn't thought through what it might say she was waying a french brand in her first public appearance since her husband stood on the steps of the capitol and said, my first rule is buy american. >> reporter: despite it all, her style is str...