By MAMAMIA STYLE

Somehow it has become totally acceptable to go commando… under blazers.

It sits somewhere between corporate and street style, in that it’s become okay you to just wear a blazer with no top, and possibly no bra, depending on how perky you’re feeling.

It all started a few months ago when Kim Kardashian pushed her daughter around New York City wearing nothing more than a blazer and pants. And now? Cara Delevigne, Rihanna and even her little sister Kendall (Jenner) are doing it.

As for us? We won’t be doing it anytime soon.

Take a look at this trend, and more of the week in style here:

Cara Delevigne - sans shirt, with Kate Moss

Kim Kardashian

Rihanna, sans shirt

Paloma Faith

Megan Gale and Shaun Hampson

Julia Morris

Olivia Palermo

Alex Chung

Rita Ora

Keira Knightley

Kate Bosworth

Tina Fey

Reese Witherspoon

Jennifer Lopez

Anna Kendrick

Dakota Fanning

Jane Fonda

Keira Knightley

Oliva Palmero

Rihanna

Rose Byrne

Julianne Moore

Kendall Jenner

Poppy Delevigne

Cara Delevingne

Kim Kardashian

Jourdan Dunn

Rachel Finch

Ricki-Lee Coulter

Jodi Gordon

Sylvia Jeffreys