The 33 year-old German and her husband, English singer Seal, are happily awaiting the arrival of an addition to their family, according to Us Weekly.
Just last month, Klum told OK! magazine that she wasn’t ready for another child immediately, although sometimes things happen without being planned.
The two celebrities are already the parents of a son, Henry, born last September. Klum also has a two year-old daughter, Leni, from her previous relationship with Flavio Briatore.