Not even a rainstorm could stop Mariah Carey from strolling the streets of New York City to celebrate Tuesday's release of her new single, "Heartbreaker."With entourage in tow (of course), Mariah mingled with fans at Manhattan Mall, browsed through some CDs at HMV, and chowed down on cheeseburgers and fries at McDonalds. MTV News' own John Norris was her lucky escort, and he brought back proof of Mariah's mall-girl shenanigans for us to present for you here in RealVideo. The "Heartbreaker" single features a DJ Clue remix with guest spots from Missy Elliott and Da Brat, and a maxi-single includes three additional Junior Vasquez remixes. Carey's "Rainbow," her first studio album since 1997's "Butterfly," is due out on November 2.