Mariah Carey in Feud with Diddy Over New Perfume?

Mariah Carey took the Big Apple by storm yesterday to launch her first ever fragrance, M, and “Extra” was in the middle of the party.

Mariah, dressed in a stunning black Henry Leger dress, was surrounded by hundreds of people at Macy's Herald Square as fans clamored to get an autograph. In true diva fashion, she arrived in a Bentley Phantom.

But with the crowd closing in, and lots of fans to please, Mariah told “Extra” her secret to practical fashion: “Comfortable shoes!” she said.

The gorgeous singer also went on rumor control, answering questions about a secret boyfriend of two years.

“I was talking about you,” she told “Extra's” A.J. Calloway. “Aren't we always having an affair?”

Mariah also tackled reports that she's in a fight with Sean “Diddy” Combs over his rival perfume.

“I have no feud with Diddy,” she insisted. “He knows I love him.”

Mariah's focus for now includes her new record, a follow-up to her multi-platinum comeback CD “The Emancipation of Mimi.” It hits shelves early next year.