Want to show off your midriff at today’s July 4th picnic? If you’re 34 or older, you’d better cover up.

A new study found ladies believe certain fashions are only appropriate for young women. Thirty-four was the age women felt was the cutoff for midriff-baring crop tops — even for women with toned tummies, like Gwen Stefani.

Other arbitrary age limits include: 37 for miniskirts, 35 for hot pants, 35 for belly button piercings, 42 for long hair, 37 for leggings and 41 for stilettos.

Sorry, just going to say it: belly button piercings are lame at any age.

Now, I do believe in the concept of “age appropriate.” We’ve all seen women trying to rock styles that are way too teenage. Even in my late 20s, I know half the stuff at Forever 21 looks terrible on me. This year’s bra-top trend — like the one in the above photo — is especially troubling, since most of us don’t have toned midriffs. (Not judging — I don’t either!)

But shouldn’t clothing choices be made on a case by case basis, and not strictly based on age? If you look great in a miniskirt at 36, it’s not like you’re going to burst into flames if you rock one on your 37th birthday.

For example, here’s Gwen rocking a midriff top at age 43:

And here’s Helen Mirren‘s famous bikini photo — she’s 63!

Jennifer Aniston gorgeously breaks the long hair rule at age 44:

And at 48, Sandra Bullock is clearly not too old for stilettos:

What do you think, ladies? Should we put age limits on hairstyles, piercings and articles of clothing?