A chiseled young model strutted around the Great White Way in his birthday suit Thursday — putting on an epic, hourlong peep show that brought traffic to a halt and had tourists fumbling for their cameras.

Krit McClean, 21, screamed out for Donald Trump as he evaded cops and pranced around the top of the red bleachers above the TKTS booth in Times Square before leaping down to street level.

“Donald Trump, where are you?!” the 6-foot-2, Bangkok-born Manhattanite yelled. “Donald Trump, where the f- -k are you?!”

McClean — a Stuyvesant HS grad who has worked for Ford Models and appeared in magazines including GQ — also yelled, “I love fashion! It’s taught me so much!”

He even dropped the names of two famous fashion photographers.

“I love you, Bruce Weber!” he shouted. “I love you, Mario Testino!”

McClean was first spotted just before 8 a.m. near the Disney Store at West 46th Street, screaming at a woman.

Then he took off his wristwatch, threw it at her and disrobed.

A security guard told McClean to put his clothes back on and he did — briefly.

He stripped again and dashed up the red stairs at West 47th Street and Seventh Avenue, all the while shouting obscenities, witnesses said.

When cops first approached, he screamed, “Get that bitch, Debbie! I want to talk to Debbie!”

As police tried to talk him down, McClean, whose blog says he was born in Thailand and grew up in New York City, spat at cops, taunted them, pulled on his penis and shook his backside at them.

He also blew kisses to the crowd and performed some sort of workout routine.

As cops closed in at 9:10 a.m., he jumped 20 feet to the ground, breaking his arm after narrowly missing a giant airbag that had been set up in case he fell.

“He looks like he had a total breakdown,” a friend of McClean’s told The Post. “I don’t know if it was a super amount of insane drugs or if he lost his mind somehow.”

Ammar Aweeh, 24, the owner of a grocery store near where McClean’s parents live on Roosevelt Island, said he heard that McClean snapped at his parents’ doorman, telling him “to go f- -k himself,” right before the Times Square antics.

McClean played varsity soccer at the elite Stuyvesant HS in Tribeca, then attended Columbia University for his bachelor’s, his blog says. His LinkedIn page says he played soccer at the Ivy League school.

His father, Vincent McClean, 70, is a former New York representative of the UN Office of Drugs and Crime.

Krit McClean has appeared in runway shows for high-end designers, including Versace and Dolce & Gabbana.

“Be yourself, be open, be interested, be interesting, and dream!” he says on his blog.

He was taken to Bellevue Hospital where he was to undergo psychiatric evaluation. He will face charges of indecent exposure once he is released, police said.

Additional reporting by David K. Li,­ ­Matthew Allan, Daniel Prendergastand ­Alexandra Klausner