Justin Bieber's rumoured ex-flame Chantel Jeffries can barely contain her ample assets in eye-popping gown as she sizzles at Las Vegas bash

She is rumoured to have enjoyed a fling with Justin Bieber. 

And Chantel Jeffries proved exactly why she caught the eye of an international heartthrob as she attended the pre-Billboard awards bash at Jewel nightclub in Las Vegas on Saturday.

The 23-year-old model and actress sizzled in a perilously plunging khaki gown in which she made the most of her sizeable bust and perky derriere. 

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Stunner: Chantel Jeffries proved exactly why she caught the eye of an international heartthrob as she attended the pre-Billboard awards bash at Jewel nightclub in Las Vegas on Saturday

Chantel, who is said to have dated Justin in 2014, looked simply sensational in the Lycra blend dress which clung to every inch of her phenomenal frame. 

Showing off her extremely ample bust was the low-cut neckline extending from a spaghetti strap, while the dress boasted a caged detail over her chest. 

Not content with flashing just her cleavage, the Jacksonville-born beauty turned around as she posed up a storm to reveal her curvaceous derriere. 

She paired the green dress with a delicate pair of khaki heels with a thin ankle strap while going for minimal accessories - allowing her incredible frame to do the talking. 

Her cup runneth over! The 23-year-old model and actress sizzled in a perilously plunging khaki gown in which she made the most of her sizeable bust and perky derriere

Stunner: Chantel, who is said to have dated Justin in 2014, looked simply sensational in the Lycra blend dress which clung to every inch of her phenomenal frame

Her shoulder-tickling ombre tresses were worn in loose waves, styled with a wide-barrel curling tong, adding a casual edge to the otherwise eye-popping look.

Chantel went for the favoured make-up trend du jour, in the form of contouring, as she applied lashings of strobe cream and bronzer to sculpt her bone structure even more flawlessly. 

Rounding out the ensemble was a thin gold choker paired with a delicate pair of earrings - making her look dainty and stunning. 

Curvy queen: Showing off her extremely ample bust was the low-cut neckline extending from a spaghetti strap, while the dress boasted a caged detail over her chest

Clearly having had a fun-filled night, Chantel took to Instagram the following day to inform her 1.7million followers she was suffering with a hangover. 

Yet far from wallowing in bed in her pyjamas, the eternally stunning model slipped into a bikini and later headed to a restaurant to rid herself of her symptoms.

She added the caption: 'Smiling through the pain of this hangover... It's the little things in life.'

What hangover? Clearly having had a fun-filled night, Chantel took to Instagram the following day to inform her 1.7million followers she was suffering with a hangover

Grabbing a bite: Yet far from wallowing in bed in her pyjamas, the eternally stunning model slipped into a bikini and later headed to a restaurant to rid herself of her symptoms

Drake was performing at the star-studded gig while his ex-girlfriend Rihanna was reportedly set to take the stage although she is said to have remained off-stage. 

The Canadian rapper thrilled the 2,000 strong crowd when he played a host of hits including Know Yourself, Back to Back, Summer Sixteen and Jumpman. 

Drake told the crowds during the gig: 'They want me to do two songs but I got nothing better to do than stay here with you all.' 

Taking the stage: Drake was performing at the star-studded gig while his ex-girlfriend Rihanna was reportedly set to take the stage although she is said to have remained off-stage

Rap star: The Canadian rapper thrilled the 2,000 strong crowd when he played a host of hits including Know Yourself, Back to Back, Summer Sixteen and Jumpman