Mariah Carey And Nick Cannon Sued By Nanny, Says "I was fired because I showed too much affection to their twins"

Mariah, Nick and the kids.

Mariah Carey and Nick Cannon may be getting divorced, but they're still something in common, their kids, because they're being sued by a former nanny who claims she was fired because she showed too much affection to their twins.Simonette DaCosta claims in a new lawsuit -- obtained by TMZ -- she was the full-time nanny when the kids were just infants. She fed, bathed and comforted them, but it didn't sit well with Mariah. 

DaCosta claims the singer berated her for showing too much affection. 

DaCosta also claims she was worked too hard ... putting in lots of OT -- sometimes 100 hours a week.She wants her pay and other damages.