updated 06/18/2012 AT 10:35 AM ET
•originally published 06/18/2012 AT 11:45 AM ET
Arriving at the Santos Dumont Airport in Rio de Janeiro Saturday, the supermodel, 31, was sporting a tiny baby bump.
In 2007, Bündchen – who is now mom to 2½-year-old son Benjamin Rein and stepmom to Jack, 4, with husband Tom Brady, 34 – announced she wanted a big family like that of her parents, who have six children.
“I’d be lying if I said no” to wanting a lot of kids, she said at the time.
Landing in Brazil, Bündchen arrived looking stylish on the (airport) runway in a pair of leggings and a black jacket.