In October, the 31-year-old mom of two (she also shares daughter Anja, 4, with fiance Jamie Mazur), opened up to Us Weekly about her seemingly instantaneous slimdown after giving birth to her little boy.
"This time I didn't really gain a lot of weight," Ambrosio admitted. "I was actually trying to be as healthy as I could. The first time I gained a lot of weight and it was hard to lose it."
Ambrosio will show off her incredible post-baby bod once again during the Victoria's Secret Fashion Show Tuesday, Dec. 3, when she struts her stuff down the iconic runway in a gem-encrusted bra worth $2.5 million.