Mariah Carey and Nick Cannon's 14-year-old daughter, Monroe, is offering rare insight into her family dynamics. "Clearing something up guys, I only have ONE brother," Monroe wrote via her Instagram Stories on Thursday, November 13, and tagging her twin Moroccan's social media account. Monroe, however, did acknowledge that she also has "other half-siblings from [her] dad." "But, they are all many years younger than me," Monroe stated.