Driving her crazy! Heidi Klum puts on a playful display with Simon Cowell as she pretends to strangle head judge at America’s Got Talent launch event

Heidi Klum had a spring in her step as she showed up at NBC Universal’s Summer Press Day on Friday in a keyhole dress that bared her shoulders and gave a glimpse of cleavage.

The blonde model and TV personality arrived at the event in Westlake Village, California, to promote the upcoming season of America’s Got Talent.

The 42-year-old judge put on a playful display with head judge Simon Cowell, pretending to wring the music mogul’s neck in frustration during a fun-filled panel interview.

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Simply stunning: Heidi Klum modeled a perfect spring dress as she arrived at an event on Friday to promote the upcoming summer season of NBC's America's Got Talent

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Simply stunning: Heidi Klum modeled a perfect spring dress as she arrived at an event on Friday to promote the upcoming summer season of NBC’s America’s Got Talent

Driving her crazy! Heidi put on a playful display with head judge Simon Cowell, pretending to strange the music mogul during a lighthearted panel interview 

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Driving her crazy! Heidi put on a playful display with head judge Simon Cowell, pretending to strange the music mogul during a lighthearted panel interview

Heavenly in white! Heidi Klum in shoulder-baring keyhole dress

Simon appeared unfazed by Heidi’s surprise attack, no doubt used to causing controversy with his frank comments and unapologetic honesty on the show.

TV’s resident ‘Mr Nasty’ seemed in good spirits during the promotional event, rocking a very casual look compared to his glamorous fellow judge.

Heidi’s white frock featured matching black and gray floral patterns set diagonally opposite each other on the left breast and right thigh. 

Getting along: Heidi smiled as she cosied up to judge Simon Cowell at the America's Got Talent panel

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Getting along: Heidi smiled as she cosied up to judge Simon Cowell at the America’s Got Talent panel

Casual: Simon sported a scruffy look and left his shirt unbuttoned

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Casual: Simon sported a scruffy look and left his shirt unbuttoned

Reality show: The group laughed as they took questions about the new season

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Reality show: The group laughed as they took questions about the new season

Panel: From left, Nick Cannon, Howie, Mel B, Heidi and Simon onstage at the NBC Universal press day in Los Angeles 

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Panel: From left, Nick Cannon, Howie, Mel B, Heidi and Simon onstage at the NBC Universal press day in Los Angeles

Heidi Klum sparkles on the red carpet at Kids Choice Awards

It was also backless and featured a zipper running down the back of the skirt ending at the knee, leaving a split to the calf. 

She added a pair of black stilettos with pompoms on the toes. 

The mom-of-four added a soft purple shade of nail polish on her beautifully manicured hands and wore her long hair in a high ponytail.  

Flashed some skin: The 42-year-old's backless keyhole frock also featured a zipper down the back and a slit in the skirt

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Flashed some skin: The 42-year-old's backless keyhole frock also featured a zipper down the back and a slit in the skirt

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Flashed some skin: The 42-year-old’s backless keyhole frock also featured a zipper down the back and a slit in the skirt

Floral theme: The white dress provided the backdrop for black and grey flower patterns set diagonally opposite each other on the left breast and right thigh

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Floral theme: The white dress provided the backdrop for black and grey flower patterns set diagonally opposite each other on the left breast and right thigh

Put together perfectly: The model and TV personality added some black stilettos with pompoms on the toes and a soft purple manicure

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Put together perfectly: The model and TV personality added some black stilettos with pompoms on the toes and a soft purple manicure

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Gorgeous: Heidi looked stylish as she attended the NBC event

Trio of judges: Heidi was joined on the red carpet in Westlake Village, California, by her co-judges on AGT, former Spice Girl Mel B and comedian Howie Mandel

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Trio of judges: Heidi was joined on the red carpet in Westlake Village, California, by her co-judges on AGT, former Spice Girl Mel B and comedian Howie Mandel

Smooch time! Lucky Howie got a kiss from each of the lovely ladies as they posed for photos

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Smooch time! Lucky Howie got a kiss from each of the lovely ladies as they posed for photos

Heidi came on board America’s Got Talent in 2013, after cutting her teeth as host and judge on Project Runway. 

She was joined at Friday’s promotional push by her fellow judges comedian Howie Mandel, Simon, former Spice Girl Mel B and host Nick Cannon. 

The America’s Got Talent judges and host appeared to be in great spirits as they chatted about the upcoming season onstage. 

All smiles: Howie and Heidi struck a pose on the red carpet

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All smiles: Howie and Heidi struck a pose on the red carpet

Chic: The supermodel added black heels with feathered details

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Chic: The supermodel added black heels with feathered details

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Chic: The supermodel added black heels with feathered details

Also at the event was host Nick Cannon, 35, who was hard to miss in a bright patterned suit and fedora.

The ex-husband of singer Mariah Carey showed off his unique style in the bright yellow, black and white look.

Flair for fashion: America's Got Talent host Nick Cannon wore a bold patterned suit

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Flair for fashion: America’s Got Talent host Nick Cannon wore a bold patterned suit

Unique style: The host added white lace-ups with silver tips and topped off his ensemble with a black fedora

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Unique style: The host added white lace-ups with silver tips and topped off his ensemble with a black fedora

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