Even with her perfectly healthy pregnancy, Natashia Corrigan knew her son would be on the larger side. Weighing 13 pounds, Brian Jr. was one of the largest babies ever born in Australia. Now, at 11 weeks old, he's averaging out in size and weight in the top baby percentile. Natashia says she thought doctors were joking when they told her Brian Jr. weighed 13 pounds. InsideEdition.com's Keleigh Nealon (https://twitter.com/KeleighNealon) has more.