Justin Bieber: "I Usually Gain 20 Pounds Around the Holidays"

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Is that the sound of Justin Bieber's stomach growling?

The 17-year-old singer made an appearance at Dolce & Gabbana in NYC Thursday as part of Fashion's Night Out, where Bieber admitted he's already looking forward to chowing down this holiday season.

"I usually gain like 20 lbs around the holidays eating my grandma's food," Bieber said. "She makes amazing turkey, great stuffing, everything. And peach cobbler!"

All kidding aside, Bieber usually favors more nutritional foods. "He's pretty good about his diet," his voice coach Jan Smith once told Us Weekly. "He eats healthy."

The holiday season will be extra special for Bieber, as he plans to release his first Christmas album later this fall.

"There are a couple original songs," the teen star said. "There are some classics, but mostly originals."