Alessandra Ambrosio took to Facebook this evening to share pictures of the newest addition to her family, baby Noah. She wrote, "Wanted to give you all a sneak peek of Noah and so thankful to pampers. By taking these pictures we helped out UNICEF and those in need." Alessandra gave birth to her second child with fiancé Jamie Mazur in May. The couple also have their almost-4-year-old daughter, Anja. Alessandra's already back to work after welcoming her son, but another Victoria's Secret model is just starting her journey to motherhood. Marisa Miller is pregnant, joining a long string of expectant VS ladies this year.