For an ultra-crisp effect, choose pieces in the same shades, butmix texturesto catch the eye.

Purse, Prada, $1,050.

(Our model is channeling ’60s It Girl Twiggy, whose iconic style was fun personified.)

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Asedate colormakes a midthigh hem demure enough for day.

Civilized plaid feels freewheeling in turquoiseeven if you’re parked at a desk.

Dress, $2,690, and boots, $2,400, Prada.

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Sweater, J.Crew, $168.

To punch up your look even more, opt for uberbright tights.

Dress, Jill Stuart, $825.

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T-shirt, Mai, $245.

Necklace, Marc by Marc Jacobs, $168.

Watch, Cartier, $31,250.

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Simple shapeslike the A-line and shiftcanbe worn countless ways.

Dress, Tibi, $629.

Scarf, Missoni, $440.

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Bag, Radley London, $278.

Gloves, Portolano Products, $100.

Tights, Fogal, $43.

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(Hi there, fuchsia!)

Worn with a floaty floral dress, they lend retro charm.

Flirty touches like bows add to the whimsical spirit.

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A variety of weaves (delicate, chunky) gives this one range.

Wear it with a woolly tweed or a sleek slip skirt.Solid whiteis the perfect canvas for patterned accessories.

Sweater, $90, Banana Republic.

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Hair bow, L. Erickson, $42.

Bag, Michael Kors, $995.

Dare to combine jewel tones.

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Orange, pink and purple?

Then ground the look with streamlined blackaccessories.

Monday mornings just got cheerier.

Jacket, $455, blouse, $295, and skirt, $325, Milly.

Sunglasses, Dior, $295.

Bag, Chanel, $3,715.

Dress, Peter Som, $1,150.

Necklace, Marc Jacobs, $495.

Watch, Chanel, $3,750.

Bag, Kate Spade New York, $395.