A music executive was busted Sunday for sneaking into a neighbor’s apartment in a tony downtown doorman building, sexually assaulting her and stealing her panties.

Adam Lublin, 43, who lives in a luxury tower on River Terrace in Battery Park City, allegedly entered the female stranger’s apartment, and she awoke to find him molesting her. She screamed and Lublin fled.

She went to the lobby and reviewed surveillance video until she spotted the creep. The doorman told her “that’s Adam” and provided her with his apartment number.

The cops were called and the victim told them that she had also noticed in the past month that several pairs of her undies had inexplicably vanished.

The officers knocked on Lublin’s door but there was no answer.

Lublin has been snapped at exclusive New York City parties posing with an array of hip-hop artists, including Swizz Beatz, Method Man and Maino. He formerly worked for the sports and live entertainment company AEG as vice president of talent.

The next day, police were stationed nearby waiting for Lublin to leave the building. At about 11 a.m., a building staffer told cops that the panty-snatching perp had just stepped into the service elevator and was about to exit the building.

The cops caught up with Lublin at the corner of Chambers Street and North End Avenue, as he held a cup with a flamingo straw, which he tossed in the trash. Police retrieved the cup and discovered that stuffed inside were several pairs of woman’s panties. Cops arrested him.

The victim later identified the flamingo straw and the undies as hers.

Lublin was arraigned Monday morning in Manhattan Criminal Court on two counts of burglary and one count of sexual abuse.

Assistant DA Elizabeth Clerkin told the judge that Lublin had once invited the victim’s roommate to sleep over after she had been locked out — an offer which she declined.

“About a week ago, the victim’s roommate woke up in the middle of the night and saw a man hovering over her,” said the prosecutor. She added that the DA’s office is investigating that incident.

“Then on Saturday night, the victim went to bed in her apartment, didn’t lock her apartment door and awoke around 5 a.m. to a white man with dark hair, heavyset, leaning over her bed and touching her vagina,” Clerkin told Judge Anne Swern.

She called this a “very strong case” and said that there was surveillance video of Lublin “going up to the victim’s floor on the elevator at the time of the incident.”

Authorities executed a search warrant at Lublin’s apartment Sunday night, Clerkin said, and recovered “additional pairs of women’s underwear.”

Swern issued an order of protection in favor of the victim and her roommate and instructed Lublin to avoid them if he saw them in the building.

He was released on $175,000 bond arranged by bondsman Ira Judelson.

“One of the backbones in our legal system is the presumption of innocence,” said defense lawyer Scott Leemon. “Today, Adam will rely on that presumption of innocence.”