'America's Got Talent': Heidi Klum Poised to Become 4th Judge

Heidi Klum

The "Project Runway" host was a knockout in plunging ice blue chiffon by French couturier Alexandre Vauthier with matching Charlotte Olympia satin sandals, Lorraine Schwartz jewels (including $750,000 black opal, pink diamond and paraiba earrings) and retro-style tousled waves.

Heidi Klum is poised to become America's Got Talent's fourth judge.

The former Project Runway host/judge will officially be named to the bench of NBC's summer reality competition series on Monday, The Hollywood Reporter has confirmed.

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As first reported by TMZ, Klum will join Howard Stern, Howie Mandel and new addition Mel B of the Spice Girls on the panel.

The former model earned an Emmy nomination in 2008 for her role on Lifetime's Project Runway, which she also executive produces. In addition, Klum has served as host of the Victoria's Secret Fashion Show a number of times. She's also hosted the German incarnation of Project Runway since 2006.

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Mel B joined the series in February, replacing Sharon Osbourne, who announced her departure from the talent show in August, claiming that NBC fired her son Jack Osbourne from its competition entry Stars Earn Stripes after he was diagnosed with multiple sclerosis. NBC refuted that claim.

Klum's addition marks the first time AGT has featured a four-judge panel. Klum is repped by WME.

Email: Lesley.Goldberg@thr.com; Twitter: @Snoodit