What do stars like Gwyneth Paltrow, Kim Kardashian and Oprah Winfrey all have in common?

Each is among the celebrities who have admitted to wearing Spanx and Spanx-like products, otherwise known as shapewear, to help flatten their tummies on walks down the red carpet.

The tight-fitting undergarments, which use Lycra and other form-fitting materials to cinch in the waist, are must-haves for millions of women longing to look more svelte.

But now the types of shapewear products that were developed with grown women in mind are attracting a much younger audience: teenagers.

“You get the training bra. You get the Spanx. Everyone wears them,” 17-year-old Lindsey Luposello told “Good Morning America.”

Teenage popstar Miley Cyrus wears them, and so do other teens as young as 13, all to make their waists look smaller and their bodies slimmer.

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