When Mariah Carey and Nick Cannon decided to bestow these names on her and her hubby's twins, we were told Monroe was named after Marilyn Monroe. Sounds reasonable enough. (Although, why not just name her Marilyn?) As for her twin brother, Moroccan, that unusual moniker refers to the Moroccan-themed room in the singer's Manhattan apartment. Guess he should be thankful Mom didn't have a Libyan-themed area up there instead.