"We want to have a lot of children," the supermodel tells Life magazine in its latest issue. "(Seal) always says that he finds me the most beautiful when I'm pregnant."
Klum and Seal, who were married last year, already have a 10-month-old son, Henry Guenther Ademola Dashtu Samuel. Klum, 33, also has a 2-year-old daughter, Leni, from a previous relationship with Formula One manager Flavio Briatore.
Klum, the host of Bravo's "Project Runway," also said her family has been given a nickname in her native Germany that she didn't know what to make of at first.
"In Germany — and this started with a newspaper headline — they call us `the Patchwork Family,"' says Klum. "I was like, `Hmm, is this an insult or is this positive?' I talked to Seal about it, and we're, like, it's actually kind of great — we're all different shades and we came together and we all love each other."