Tyra Bank, 42, revealed her newborn son York is giving her sleepless nights

Tyra Banks' newborn is giving her sleepless nights.

The America's Next Top Model host - who welcomed her first son York via a surrogate in January - has opened up about the struggles of being a mother, revealing she shares the night duties with her partner Erik Asla.

'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. So I balance that and his [York] dad helps, and we go back and forth so that's good,' she said. 

New mum mode: Tyra Bank, 42, revealed her newborn son York is giving her sleepless nights

'Erik does about 40 percent diaper duty at night. So we're almost 50/50,' she said.

The 42-year-old model also revealed motherhood has helped improve her business as she has learned the art of delegation.

Love of her life: Tyra shared a sweet photo of her newborn son on Valentine's Day

She added to E! News: 'Well, I'm on maternity leave right now, just taking a break. I really now am empowering my team. I'm understanding delegation, understanding that I don't have to do everything to make something successful,' she noted.

'I'm on maternity leave and Tyra Beauty is kickin' butt! It just goes to show, empower and empower others and you can grow.'

By her side: Tyra is pictured in LA with boyfriend (and father of York) Erik Asla