It seems like trends change in the blink of an eye when you're a teenager. Keeping up-to-date on the latest must-haves and hottest new looks isn't just hard, it also gets expensive. This is also a time when you start to develop your own personal style, so how can you find the trendiest items at prices you can afford? It's simple. You just check out the juniors' clothing section at thredUP.

The Start of Signature Style

This is where it begins, and this is when you define yourself. What you wear is up to you. Maybe you're a jeans and T-shirt type of girl. Perhaps you prefer hoodies and short shorts or crop tops and high-waisted pants. For stylish juniors' tops, shop Charlotte Russe and similar brands. That clothing strikes the perfect balance between edgy and easily wearable.

Take the chance to snag plenty of juniors' jeans from your favorite labels, too. Capris and cropped jeans, skinny jeans, jeggings, denim shorts and skirts – there are so many styles. It pays to experiment and expand your wardrobe. What's better than having jeans for every season?

As for the rest of the wardrobe, it's a good rule of thumb to have all the basics. Even as you assert your personal fashion sensibilities, give into the allure of neutrals and classic pieces – they work for a reason. Intersperse your favorite trends, the ones that make you strut your stuff because you know how fierce you are.

The Sports Lux Look

The fashion in high school and college is a bit eclectic. High school abounds with sweatpants days, and in college, it's not uncommon to roll into class wearing pajamas. That's partly why the sports luxe look is so popular – it encompasses comfortable, cozy items that are ideal for those lazy mornings when you simply cannot. Browse for clothes from sporty brands, such as Hurley, and snag sweats, hoodies, fleeces, sweatshirts, and oversized pullovers.

Dressed for Success

There are so many occasions that require fabulous juniors' dresses, especially in high school and college. In addition to Homecoming, Prom, and various other dances, there's always a party, a dinner, a networking event, or another activity that calls for a stunning dress. Ruby Rox and similar brands are perfect for cocktail dresses and formal frocks. It's not a bad idea to buy a little black dress now either – the LBD never goes out of style.

Casual dresses call for something different. Fortunately, there's a wealth from which to choose, ranging from maxi dresses and retro-inspired midi dresses to adorable sun dresses and polished, tailored pieces. Remember, you can always dress up a casual item with the right accessories – dazzling shoes, a gorgeous cardigan, or even a scarf.

Keep up with the looks peeking from the front pages of your favorite magazines and turn yourself into the fashion queen of the campus. Thanks to thredUP, you can refresh your wardrobe anytime you like. With prices as much as 90% off retail, who could resist?