On a checkerboard runway in a cavernous Park Avenue Armory transformed to look like Harry Potter's library, Tommy Hilfiger sent out a tight lineup filled with Prince of Whales plaid, argyle, and herringbone. The theme was "Savile Row meets Ivy League" with a nice dose of '60s, and thus there was a preppy-mod tinge to these well-tailored clothes. Coats of every kind — peacoats, boyfriend blazers, duffles, and parkas — dominated every look. Meanwhile a strict palette of cream, navy, red, and khaki kept the whole thing feeling fresh and neat — just the way a Hilfiger collection should be.

With Karlie Kloss and Alexa Chung on the red carpet, this may have been the chicest Grammys yet. The MTV House of Style host and supermodel — who has been conspicuously absent from this week's New York Fashion Week runways — looked sleek in a body-con Michael Kors cutout dress, while Chung looked sweet in a pale-yellow corseted Valentino dress. See those looks — and peek at who else made our top 10 list from Sunday's Grammy Awards red carpet — right here, in the slideshow.

People expect a lot of things from a Zac Posen show. Glamour, elegance, sublimely seamed dresses just begging to be worn to a red-carpet affair, and of course, starlets in the front row. What they don't usually expect, however, is day wear. At Posen's Fall 2013 show today at New York's Plaza Hotel, they got all that — and much more. With a new focus on separates, the designer sent out a breathtaking lineup that included a structured pod coat in camel-colored wool cashmere, tiered chiffon skirts, embroidered lamé tweed peplum blazers, and cropped velvet pants. Click through to see the full collection; our full review is coming soon.

It was all about texture at the Thakoon Fall 2013 show. With a muted and somber color palette, the designer worked fur, lace, and heavy satins into structured shapes that felt right on cue for his uptown girls who like to hang out downtown. A sweet touch came via firefly motifs and dandelion prints.

Diane von Furstenberg made her name as a designer in the '70s with her iconic wrap dress, and for Fall 2013, she returned to her roots, opening her show with a printed version of her iconic dress. With pulsating disco on the soundtrack, DVF was filled with slinky jersey dresses, colorblocked jumpsuits, halter dresses, and more pieces that could have felt as at home at Studio 54 as they will in the chicest hot spots of today. And don't worry, there was still plenty to wear to work for the women who depend on her to fill their wardrobes with wearable dresses. And in an unusual move for any designer, von Furstenberg walked the entire length of the U-shaped runway at Lincoln Center to the strains of Chaka Khan's "I'm Every Woman," waving and pausing for air kisses along the way.

Derek Lam showed in an airy all-white gallery for Fall 2013, and the clean lines of the surroundings were echoed in the clothes. Shades of ivory, tan, camel, and navy were pieced together for a minimalist take on colorblock. The leather and suede pieces were standouts, from a sweeping cream leather skirt to a top with intricate ladders of patchwork radiating from the neck.

Jonathan Simkhai may have made his New York Fashion Week debut just last season, but he's already been generating quite a bit of buzz. And if the crowd — which included several notable fashion directors and stylists — at his Fall 2013 presentation at Milk on Saturday evening is any indication, that excitement doesn't seem to be in danger of dying down any time soon.

Not that it should. Simkhai — a member of this year's CFDA incubator program — seems to know exactly what kind of clothes his cool downtown customer wants, and he excels at creating edgy-but-easy separates that could easily make up a whole wardrobe. This season, those pieces include a structured cocoon coat made from panels of navy wool and checked tweed, a quilted leather bomber, a black leather sweatshirt with checkered intarsia sleeves, and asymmetrically ruffled taffeta skirts. Also in the mix were custom oxfords, flatforms, and booties created specially for Simkhai by Shoes of Prey; in black, white, and navy they complemented the offering perfectly.

For her Fall 2013 collection, Victoria Beckham filled the New York Public Library with a series of sleek looks in a palette of black, gray, and taupe with flashes of royal blue. Two coats stood out with their clean cuts and material combinations: one in a generous windowpane check on gray wool fused with a blue material, another bright blue with camel-colored sleeves. Beckham's skirts were cut a little longer than they've been in the past, with some hemlines falling to the calves. But her signature sex appeal was still there, courtesy of slits along the thighs.