What are they buying?

Back to school doesn't just mean students are hitting the books again — they're also hitting the mall, looking for an updated wardrobe filled with the latest jeans, shoes and shirts.

Super-faded and ripped jeans are largely out, and the midtop (rather than low or high-top) sneaker reigns, according to an interactive style game presented to shoppers ages 14 to 24 for USA TODAY by predictive analytics software company First Insight.

And stash the tee shirts with the "silly girl humor," recommends off-price fashion website Ideeli, echoing First Insight's findings that the "statement tops" aren't a top pick anymore.

Clothing purchases helped boost July's better-than-expected retail sales numbers, out last Tuesday, and teen shoppers — and their parents — are helping lead the charge.

"Teens are spending," says retail analyst Jennifer Black, adding that it's because they like to regularly update their outfits.

"Teens don't make investments in clothing," says Black, of Jennifer Black & Associates in Lake Oswego, Ore. "They're more apt to move on to the next trend."

Often, a new teen trend is the opposite of the one that preceded it.

"Everything is a reaction to the last thing that's cool," says Greg Selkoe, founder of the clothing and accessories website Karmaloop, which caters to fashion-forward young people.

The current coolest purchases:

?Jeans. Medium to dark blue and brightly colored jeans are the most popular, according to First Insight and several retail experts. Skinny jeans remain popular with young women, but boot cuts are hottest for young men, who have all but abandoned skinny jeans, the data show.

But the bold colors won't be in for long. Teens who are "more fashion forward will get tired of colored jeans first" and go back to "distressed, faded washes," says Catherine Moellering, executive vice president of trend consulting firm Tobe. It's like a "return to the '90s."

Animal-print jeans were a low-ranked style on First Insight's survey, but flash-sale site Ideeli says they're still very popular with its shoppers.

"They are on fire," says Marie Ivanoff, Ideeli's merchandise director.

Khaki and camouflage, sometimes in animal prints, are selling even better than jeans at Karmaloop.

?Tees. First Insight says graphic and striped tees will be popular with young men, while young women favor a classic, plain tee. The striped tank was ranked second most popular by young women, according to First Insight.

On the outs are shirts with sayings, First Insight's data show. "The feel-good-slogan-and-statements-on-tees trend is saturated," says Raquel Quinones, J.C. Penney senior manager in divisional trends for juniors, which caters to ages 18 to 23.

But Julia Diamond, a high school sophomore from Crofton, Md., says some kids still wear them even though "they're not as big." The 15-year-old says she has several, including one with a "periodic table of texting" and another that says, "I love British boys."