The Brazilian supermodel caused a storm by publishing a snap which showed her feeding her daughter Vivian while a team of stylists work on her hair, nails and make-up.
She captioned the picture "multi-tasking" and the snap prompted a barrage of angry online comments from other mothers.
Rossum has now joined in by lambasting Bundchen in a recreation while shooting her Tv show Shameless.
A snap posted on the star's Instagram.com page shows her striking a similar pose to Bundchen and holding a baby doll in a much-less glamorous setting.
The picture's caption reads, "Hey (Bundchen), I feel ya (you) girl. Kidding. Fake baby. Soy milk. Shameless."