In the picture, the model is doing a yoga pose over a white mat as Vivian reclines between two throw pillows.
"Practicing yoga with my little partner before going to work. Enjoy your day!" the model captioned the photo.
Baby Vivian is Bundchen's second child with husband Tom Brady. The couple welcomed their first child, Benjamin, in 2009 and Brady has another child, John Edward Thomas, with former girlfriend Bridget Moynahan.
2014: The Year in Fashion [PHOTOS]
Polly Bergen, Emmy Award-winning actress, dies