London, Aug 20 - Mother of three German supermodel Heidi Klum, 36, says she will not extend her family after her fourth baby is born later this year because four kids are 'a lot of work'.

Klum who is expecting her fourth child together with singer husband Seal says they will not extend their brood again because they are now 'outnumbered' by their children, reports femalefirst.co.uk.

'We're outnumbered. Four is perfect. Three is a lot. But four? It's a lot of work. We're hands-on, and we feel like this is what we can handle,' she said.

The 'Project Runway' host also admitted her glamorous lifestyle was pushed aside when she became a mother because her three children - daughter Leni, five, and sons Henry, three, and two-year-old Johan - have 'taken over' the family home.