When you鈥檙e pulling that聽14-hour cram sesh in college, it鈥檚 easy to fall back on聽yoga pants and sweatshirts. But while that uniform may fly during your 8am physics class, the real world calls for a wardrobe that is a little more grown up. Whether you are a post-grad looking to upgrade your wardrobe, a senior trying to figure out what to wear to that internship聽interview or just looking to add a little fun to your everyday workwear, we鈥檝e got 12 pieces that will add some聽stylish sophistication to your closet.

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1.聽Floral Blazer: Make your wardrobe pop with a printed blazer. Pair this floral jacket from Modcloth ($68) with colored pants and a white top for a chic business look that will take you through spring and summer.

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2. Basic Dress: Every girl鈥檚 wardrobe needs a simple dress that will take her through the workday and into happy hour. This bright little number from Madewell ($78) comes in a few different colors and looks great alone or paired with a statement necklace or a fun pair of printed pumps.

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3. Collared Shirt: A great structured top is a staple that can be worn in a variety of ways. This floral shirt from Boden聽($58) looks great with pants, a black skater skirt or even a pair of high-wasted denim shorts for a gorgeously grown-up vacation look.

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4. Pretty Pumps: It鈥檚聽time to perfect your power walk with a sleek pair of pumps. The bright chartreuse color聽in聽this pair from Ruche聽($43)聽is the perfect way to add an unexpected pop of color to a powerful career outfit.

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5. LBD:聽This sweet frock from Dear Creatures ($110) is the perfect little black dress. With a lacy top and sweet scalloped hem, it makes for a fun date-night dress or a casual day in the office.

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6. Watch: Before you get into the habit of constantly checking your phone at your desk, invest in a stylish time piece. This grey and rose gold watch from Need Supply聽($100) is chic, yet聽simple enough to go with everything in your closet.

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7. Classy Night-Out Dress: It鈥檚 time to ditch the cheap club wear for some classy grown-up pieces. This pale pink lace dress from Nasty Gal ($88) is a sophisticated option for a night on the town.

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8. Structured Handbag: Trade in your slouchy book bag for a structured one聽you can haul to coffee shop work sessions and lunch meetings. This satchel from Matt and Nat聽($150) has a removable strap that you can聽throw over your shoulder when you鈥檙e on the go.

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9.聽Graphic Pencil Skirt: Add some personality to your closet鈥檚 most classic items by going with pieces that have a unique graphic pattern. The geometric pattern overlaid with a floral print on this skirt from Anthropologie聽($158) is quirky and fun without being too overpowering or crazy for the office.

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10. Wrap Dress: Wrap dresses are always in style and聽flattering on all body types, making them a worthy investment piece. Try this ASOS聽($135) dress with a vintage-inspired pattern to make heads turn.

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11. Chambray Pants: A pair of chambray pants can be dressed down with a white t-shirt and strappy sandals or spiced聽up with a pair of flats and a linen blazer. This pair from Nordstrom Rack ($74) comes in a dark or light wash.

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12. Colorful Cardigan: Add a pop of color to your outfit by pairing it with a brightly colored sweater, like this聽Kate Spade cardigan聽($278). You want to aim for a piece that鈥檚 comfy and casual, yet still feels mature when paired with high-waisted pants and a black top.

What are some of your favorite sophisticated styles? Let us know in the comments!