Gisele Bundchen arriving at Santos Dumont Airport in Rio on June 16, 2012. Credit: GADE/AKM-GSI

Gisele Bundchen's pregnant belly seems to have popped overnight!

In Rio de Janiero, Brazil on Saturday, the catwalker worked her growing baby bump as she arrived at the city's Santos Dumonth Airport. Rocking skin-tight black skinny jeans, a soft grey T-shirt and a black Rick Owens jacket, the Native Brazilian let her natural beauty shine through her nearly makeup-free face.

Just like Beyonce and Jessica Simpson, who wore heels through most of their pregnancy terms, the 5-foot-11 stunner reached new heights in high Matt Bernson wedge booties.

Us Weekly first broke the news of the supermodel's pregnancy earlier this month when a source told Us that the Brazilian beauty was three months along already. "They are really happy!" the source says.

This will be the second child for Bundchen, 31, and her husband of three years, New England Patriots quarterback Tom Brady. The pair have two-year-old son, Benjamin. (Brady also has a 4-year-old son, Jack, with ex-girlfriend Bridget Moynahan.)