Model and television host Heidi Klum poses for photographers prior to the start of the Project Runway show during New York Fashion Week September 7, 2012. (Photo : REUTERS/Keith Bedford )

Heidi Klum showed off her sexy back as she strutted down the catwalk along with her fellow judges at "Project Runway" Season 10 Fashion Show at New York Fashion Week Friday.

39-year-old Klum went for sexy glamour in a sparkly cut-out golden gown that showed off her cleavage and bare back.

A series of models showcased the collections from the three finalists, Fabio Costa, Melissa Fleis and Dmitry Sholokhov.

Heidi Klum and her fellow judges Michael Kors, Nina Garcia and Jennifer Hudson then walked down the runway to pose for photographers.

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Jennifer Hudson almost stole the spotlight from Klum in a bright teal jumpsuit and matching blazer, while donning bold orange lip.

“Wow, 10 seasons, who would have thought that would happen,” Klum said in front of the huge audience at the Lincoln Center tents.

The power of "Project Runway," according to Heidi Klum, comes from the lasting power of fashion itself and its worshippers.

“How can you say, ‘Well, we saw already pants and now there are pants again on the runway?’ They’re different,” the show's longtime judge Klum said in interviews at the Empire Hotel near Lincoln Center, according to The Washington Post.

“A lot of shows got a kick start from our kind of module, in a way.”

The finale of "Project Runway" will air on Oct. 18 with celebrity judge Jennifer Hudson.

Heidi Klum, mother of four, has been making headlines in the recent weeks as rumors surfaced pointing to her romance with Martin Kristen, Klum's bodyguard of four years. Her estranged husband Seal made some comments that sparked speculations that Klum cheated with Kristen while married.

"To be quite honest, if there is going to be somebody else in their lives, I'd much rather it was a familiar face. I guess the only thing I would have preferred is that. . . I guess I didn't expect any better from him, I would have preferred Heidi show a little bit more class and at least wait until we separated first before deciding to fornicate with the help, as it were," Seal told TMZ when he was caught up at the airport last week.

"But I guess you now all have the answer that you've been looking for for the past seven months."

The singer told TMZ before opening up about the demise of his 7-year marriage.

"That's what happens when two people separate. They move on and that generally means [they have] other people in their lives," said Seal.

"I necessarily don't expect to Heidi to all of a sudden become a nun, but as always, my main priority is the emotional well being of our children."

An overwhelming amount of media buzz followed the comments, alleging that Heidi Klum had cheated during their 7-year marriage.

However, Seal's words seem to have been misunderstood.

"Seal would like to clarify that he was not implying his wife was cheating on him while they were together, but rather he was pointing out that they are separated and the divorce is not final so they are legally still married," a rep for Seal later explained to People.

Either way, Klum seems to be perfectly fine in moving onto a new stage in her life.

"I cherish all of the great memories Seal and I created together over the years," Klum told People. "Our separation was based on issues between the two of us.

"Seal has moved on and so have I. My priority has and continues to be protecting and providing for our children."

The former couple had four children together: 8-year-old Leni, 6-year-old Henry, 5-year-old Johan and 2-year-old Lou.