When Calvin Klein Met Glen Plaid As the dark, dark, fall collections enter their home stretch, and even with the big Marc Jacobs show still to come tonight, we may as well go ahead and declare a winner as Fashion Week's MVT. That is, Most Valuable Trend. He is Mr. Glen Plaid. Mr. Plaid, also known by his nickname the Prince of Wales, has had an unexpectedly strong performance this season, having made key assists in the collections of Lisa Perry, Thom Browne and Rag & Bone. Mr. Plaid scored at least two game-winning touchdowns in the separately shown men's and women's collections of Tommy Hilfiger, while facing stiff competition for the title from Mr. Houndstooth (like Madonna, he goes by one name), who also appeared in the lineups of Mr. Browne and Rag & Bone, and Ms. Furry Mittens, who played tough and hard for the teams of Joseph Altuzarra, Alexander Wang and Michael Bastian. What ultimately pushed Mr. Plaid over the edge today was his unexpected appearance in Francisco Costa's collection for Calvin Klein. In Look No. 3, he was daring and mysterious, over-dyed as a black-as-night wool and vinyl sleeveless dress. He lightened up a bit when he later appeared as a flared waist shell and pleated skirt, looking just a bit cocky with a stretchy belt that closed with a championship buckle. Jessica Chastain and Olivia Wilde certainly looked impressed. Plaids and checks were a theme for Mr. Costa, who craftily inserted small square openings into a gray wool skirt (worn by Carolyn Murphy, no less) to represent the intersecting lines of a subtle grid. Well played, Mr. Plaid, and better luck next season, Ms. Mittens.