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.

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: Click below to find out