But it looks like the trend has evolved again with low-cut plunging tops showing off as much décolletage as possible being the 'in thing' this summer.

As always, the style is dictated by the trendy A-listers in the run-up to summer, with fans taking inspiration from the likes of Irina Shayk and Leonardo DiCaprio's rumoured girlfriend Toni Garrn.

And true to form the pair arrived at amfAR's Cinema Against Aids Gala - held at swanky Hotel du Cap-Eden-Roc, near Cannes - in eye-wateringly low-cut dresses.

Newly-single Irina, who is thought to be dating Bradley Cooper after ditching Cristiano Ronaldo last year, certainly courted attention in her breast enhancing dress.

Supermodel Chanel Iman followed suit in a floor-length silver dress cut down to just millimetres above her bellybutton.

British beauty Lily Donaldson went for a simple yet mightily effective black frock with silver diamante edging cut very close to her chest.

Does this red carpet influx of plunging dresses and very dangerous necklines mean the era of Kardashian bum-skimming hemlines is in the past?

Is the rise of the 1960s mini skirt set to dive-bomb in favour of a more conservative length skirt? It would seem the A-list are in favour of this motion.

What's on the red carpet is usually reflected in the high street and you can bet your bottom dollar Topshop, River Island and the like will be snipping inches off their necklines in preparation for the summer.