Yesterday on his radio show, Nick Cannon confirmed the rumors that he and Mariah Carey are having twins. In October the couple confirmed that they’re expecting, after going through a miscarriage in 2008. Cannon said Mariah ran into President Obama and his wife, Michelle, last Sunday while she was performing at TNT’s Christmas in Washington 2010. “They, ironically enough, questioned my wife about, you know, ‘So, what are you having, are you having twins?’ ” Cannon said Thursday morning on his 92.3 Rollin’ With Nick Cannon radio show. “And at this point she hadn’t told anybody anything because doctors advised us to keep it to ourselves until we get further along,” he said. “And because of the excitement, because of the emotion, she was overwhelmed [and] she shared with the President and First Lady that we are having twins.” The couple, who were married in 2008, renewed their wedding vows last April.