How low can they go? Heidi Klum and Mel B continue their battle of the busts in extremely low-cut frocks at America's Got Talent bash

Each week it seems Heidi Klum and Mel B battle to outdo each other in the fashion stakes.

And the America's Got Talent judges were at it again at the show's after party on Wednesday in New York in ever more revealing outfits.

Heidi, 40, showed off her cleavage in an extremely low-cut silver dress, while Mel B displayed her ample assets in a tiny plunging dress that left little to the imagination.

How low can they go? Heidi Klum showed off her cleavage in an  low-cut silver dress, while Mel B displayed her ample assets in a plunging dress at the America's Got Talent after party on Wednesday in NYC

The 40-year-old supermodel looked like a sun-kissed goddess in the fitted diamante frock, which showed off her shapely legs to perfection.

Heidi added a boost to her already tall 5ft 9in frame with strappy heels, and added further glitz with dangling silver earrings.

She wore her blonde hair in a relaxed updo and displayed a beachy glow with peachy blusher and shimmery eyeshadow.

Sun-kissed goddess: The 40-year-old wore her blonde hair in a relaxed updo and displayed a beachy glow with peachy blusher and shimmery eyeshadow

Towering beauty: Heidi added a boost to her already tall 5ft 9in frame with strappy heels, and added further glitz with dangling silver earrings

Mel B, meanwhile, showed off her curves in an extremely short black dress that sported yellow paneling down the middle.

The 38-year-old displayed her toned pins in the tiny frock, and donned peeptoe black heels.

She wore her reddish brown hair in cascading curls down her back and opted for a smokey eye and glossy pink lips.

Anything you can do I can do better: Mel B, meanwhile, showed off her curves in an extremely short black dress that sported yellow paneling down the middle

Spot the beauty: Heidi smiled alongside designer Zac Posen (L) and Tim Gunn (R)

In her element: Heidi smiled happily as the men kissed her on each cheek

Also on the red carpet were judges Howie Mandel, who opted for a dazzling blue jacket, and Howard Stern, who donned a grey striped blazer for the occasion.

He was joined by his gorgeous blonde wife Beth Ostrosky Stern, 41, who flaunted her legs in a short skirt paired with a buttoned-up waistcoat.

Presenter Nick Cannon looked dapper in a shiny grey suit and striped tie as he played up to the cameras.

Pop of colour: Fellow judge Howie Mandel wore a striking blue jacket as he smiled happily for the cameras

Looking good: Howard Stern donned a striped grey blazer and wore his hair in its signature curly style 

Blonde bombshell: He was joined by his gorgeous wife Beth Ostrosky Stern, 41, who flaunted her legs in a short skirt paired with a buttoned-up waistcoat

Bringing his A game: Presenter Nick Cannon looked dapper in a shiny grey suit and striped tie as he played up to the cameras

Heidi looked a far cry from her glamorous appearance when she stepped out with boyfriend Martin Kristen in New York earlier in the day.

She wore a baggy black-and-white tie dye dress over black leggings and sandals as the couple strolled together hand-in-hand.

Heidi pulled her blonde back into a simple bun and shielded her eyes with animal print glasses in lieu of makeup.

Like night and day: Heidi looked a far cry from her glamorous appearance when she stepped out with boyfriend Martin Kristen in New York earlier in the day