Visible undergarments are making a comeback. Our critic explains where the trend originated and what it might mean.

Bullet bras? Really? That staple of 1950s sweater girls and Bond villainesses (the ones whose undergarments turned out to contain actual bullets)?

Conical busts were all over the Met carpet and the after-parties, from Kylie Jenner to Charli XCX and Cardi B. But the history of the bullet bra is far less glamourous.