McDonald's Mariah Menu to feature free food and a chance to get exclusive Mariah Carey merchandise

Twelve days of free food won't be the only deal in McDonald's upcoming collaboration with Mariah Carey.

The Mariah Menu, which debuts Monday, Dec. 13, will also feature free beanies with Carey's signature and t-shirts with a photo of her.

"I always get a sense of nostalgia when I see the Golden Arches, so creating throwback merch with one of my favorite photos from the 90s was really fun for me,” Carey said in a statement.

McDonald's has previously rolled out limited-time celebrity meals based on stars' favorite McDonald's orders, including the Saweetie Meal last summer and "Famous Orders" with BTS, J Balvin and Travis Scott.

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But the Mariah Menu is different and features a select free item each day through Christmas Eve with a $1 minimum purchase on McDonald’s mobile app.

The free beanies are up for grabs on Dec. 15, the day when the freebie is a bakery item. The free shirt will be given away Dec. 21 when the freebie is the Sausage McMuffin with Egg.

For a chance to get one of the exclusive items, McDonald's says you need to "be one of the first approximately 10,000 people" of the day to redeem the Mariah Menu deal through Mobile Order & Pay with a $1 minimum purchase.

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Follow USA TODAY reporter Kelly Tyko on Twitter: @KellyTyko. For shopping news, tips and deals, join us on our Shopping Ninjas Facebook group.