Natalie Portman got dressed up for a stop by the Hotel Plaza Athenee in Paris last night. She's in her fiancé Benjamin Millepied's home country after a stint in LA, where she stepped out with her son, Aleph. Natalie has since turned her focus to philanthropy and announced yesterday that she's taking on the role of ambassador for the international charity Free the Children. The actress and Dior spokesmodel personally chose a lipstick from the brand, Rogue Dior in Nude Griege, the proceeds of which will go to Free the Children. Natalie shared her excitement about becoming involved, saying, "As a mother and the organization's newest ambassador, I am grateful to Free the Children for giving me the opportunity to channel my passion and love of children into meaningful action that furthers the education and leadership of young women for years to come."