Is a baby bump a statement piece in the world of fashion? It certainly is the one accessory that never goes out of style. This week Victoria's Secret model Alessandra Ambrosio strutted her stuff during São Paulo Fashion Week, showing off her five-month pregnant belly in the process. The model, who hid the fact that she was newly pregnant with her second child during the lingerie company's fashion show in November, wore an array of belly-grazing designs and towering heels as she joined the lineup of expectant supermodels who've walked the runway before her. Keep reading to see which other model moms have done the fashion-show strut while pregnant.