Supermodel Heidi Klum is facing difficulties in raising her kids after she termed it "tough" having four children.

The German beauty who is married to singer Seal gave birth to daughter Lou last month.

She is struggling to adapt because her newborn baby demands a lot of her time and attention, Femalefirst reported.

"Of course this is all very tough for me at the moment because Leni, Henry and Johan want to continue to do things with their mama and papa. They are not really interested in the fact that you have just had a baby. Seal and I have a lot of work because we have to divide everything among us," Klum said.

The 36-year-old 'Victoria's Secret' model however has taken it as a challenge.

"At the moment Lou needs me enormously. Not only because of breastfeeding but also because she needs to be close to her mother. She will sleep now for a year with us in our bedroom just as her siblings did. It's easier at night if she is hungry," Klum said.

"You must always think of new things, this is sometimes a challenge. We often make play dates with other kids or we go to the park. On weekends we like to go to Disneyland. It's great! We are incredibly happy and the family really satisfies me," she added.