Tyra Banks struggling with sleep deprivation

New mother Tyra Banks has taken a back seat from driving as she struggles with a lack of sleep.
The supermodel-turned-TV mogul, 42, became a first-time mother in January , when she and her photographer boyfriend Erik Asla welcomed a son via surrogate.
"Some mornings you wake up, and you're like, 'Where am I? I don't know what's going on. And I know it's not a good idea for me to drive right now because I did not sleep'," she laughed.
"So I balance that and his dad helps, and we go back and forth so that's good."
Asla has also been doing his fair share of night changes for their tot.

"Erik does about 40 per cent diaper duty at night. So we're almost 50-50.