Holly Willoughby looks elegant in a plunging black gown at the launch of her new Netflix show Celebrity Bear Hunt

HOLLY Willoughby looked unthinkable arsenic she stepped retired to observe the motorboat of her marque caller show, Celebrity Bear Hunt.

The TV presenter turned heads successful a gorgeous achromatic gown arsenic she attended the premiere for the caller Netflix series.

Holly is the big of the show, her archetypal with the online streaming giant, which sees immoderate of the UK's biggest names alert to Costa Rica to instrumentality portion successful a slew of tough-challenged each whilst hoping to evade the seizure of explorer Bear Grylls.

Making a connection connected the red carpet, Holly's formal featured an incredibly plunging beforehand which exposed her cleavage.

She paired the figure-hugging fig with a brace of elemental achromatic precocious heels for the occasion.

Her trademark blonde tresses were styled successful escaped waves down to her shoulders arsenic she kept 1 broadside tucked down her ear.

She kept her make-up elemental and classy arsenic she beamed for waiting photographers astatine the glitzy motorboat event.

The programme launches connected the streaming tract time with galore twists and turns expected on the way.

Celebrity Bear Hunt saw the 43-year-old mum pitchy retired to film in Costa Rica — a state notorious for its hijackings, executions and drug gangs — conscionable weeks aft discovering that she had been the target of a kidnap, rape and murder crippled here in the UK.

While making the eight-parter, ex-SAS trooper Bear Grylls, 50, says helium discovered an interior alloy that belies Holly’s girl-next-door TV image.

He said: “I’ve learned implicit this amusement that she is overmuch smarter, ­savvier, tougher than she looks — and bash not beryllium fooled by that nice exterior. I’m not, and I archer her this often.

“Holly always says, ‘I would beryllium ­terrible if I was a contestant. I’d die. I’d conscionable beryllium successful a bush and cry’. But I’m suspicious of that.

Holly was joined by chap big Bear arsenic good arsenic the programme's formed for the premiere party.

The Saturdays starlet Una Healy donned a affluent maroon hue formal which was adorned with an abundance of sequins.

Posing up a storm with her manus connected her hip, Una looked sensational successful the burgundy formal that had a plunging neckline and cut-out detailing.

Mel B and Steph McGovern were besides successful attendance arsenic was exemplary and Kate Moss' sister, Lottie Moss.

The Sun was the archetypal to uncover the afloat line-up for the breathtaking caller amusement past year.