Choose a neutral in a texture—Unlike black, grays and whites really spotlight varying textures. Betty's ruched skirt softens up her blazer + Breton striped combo.
Above, from left: Betty, image via Le Blog De Betty, RVCA Zoey Stripe Tee, $33.99, available at Tilly's; Cartonnier Acting Out Skirt, $88, available at Anthropologie; Topshop Square Leather Satchel, $125, available at Topshop; Topshop Maddox Woven Buckle Shoes, $60, available at Topshop; Twenty8Twelve Cobalt Blue Blazer, £245, available at Liberty.
Go skinny—Neutral pants have a way of making you look wider than you are. Choose something with a long and lean silhouette to avoid looking like the Pillsbury Doughboy.
Above, from left: Frida J., image via Lookbook; Bottega Veneta Jersey Harem Pants, $360, available at Net-A-Porter; F21 Quilted Moto Jacket, $13.99, available at Forever21; Topshop Paisley Lace Longline Bralet, $40, available at Topshop; Opening Ceremony Lace-Up Wedge Sneaker, $485, available at Opening Ceremony.
Mix up hues—Take a cue from Rachel and wear all your neutrals at once. An airy cream dress looks ethereal paired with a buttery brown vest. Keep from looking too saccharine with some clodhopper heels.
Above, from left: Rachel Nguyen, image via That's Chic; French Connection Jolie Dress, $79.9, available at French Connection; H. Eich Military Inspired Waistcoat, $162, available at Farfetch; Giuseppe Zanotti T-Strap Cork Platform Wedges, $636, available at Bluefly; Miu Miu Vintage Cat-Eye Sunglasses, $255, available at Saks Fifth Avenue.