The German supermodel is already mum to Leni, nine, Henry, eight, Johan, seven, and four-year-old Lou and told E! News that she doesn't think she will be adding to her brood.
"I don't think so," said the TV star. "Four is great."
Heidi - who split from British husband Seal last year and is now dating her bodyguard Martin Kristen - admitted life is busy raising four kids and also having a career.
"I will sleep when I'm old, I don't have time for any of that now," laughed the 40-year-old.
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You're extremely attractive. Take this opportunity to ask for some favours. It will be difficult to resist your charms. Taking some courses can improve your professional prospects. Don't be afraid to pursue a career in the arts. Friends may tell you it's impossible to make a living in the creative field, but they underestimate your ability. Your combination of imagination and pragmatism will help you make a good living. Anything that involves working with your hands is sure to appeal to you.More