Alessandra Corine Ambrosio was born in the Brazilian town of Erichim, Rio Grande do Sul, to petrol station-owning parents of Italian, Polish and Portuguese ancestry. She took up local modeling classes at the age of 12 and participated in Brazil's legendary 'Elite Model Look' competition two years later in 1996, where she landed among the 20 finalists. At the age of 15, she debuted in modeling for Dilson Stein, who's credited for discovering top models Gisele Bündchen and Caroline Trentini. Her modeling job took the right path when she appeared on the cover page of Brazilian Elle magazine. Thereafter, she was signed by Guess for its Fall 2000 Millennium Campaign. She was hired by the American lingerie brand 'Victoria's Secret' in 2000 and made her runway appearance at its fashion show. In 2004, she launched her own swimwear line, Alessandra Ambrosio by Sais, as a division of Rosa Cha, and was well received with 10,000 units being sold in its first month. She modeled at the The Victoria's Secret Fashion Show (2005), dressed in lingerie made completely from candy. In 2009, she featured on the cover of Marie Claire's July edition, along with Sacha Baron Cohen to promote his film Brüno (2009).
She appeared in an ad campaign with American model-cum-actor Ashton Kutcher for Brazilian sportswear company, Colcci, for its Spring/Summer 2012 collection, thus becoming the brand's new face.She introduced her own fashion and lifestyle brand, Ale by Alessandra, partnered with US retailer Cherokee, offering a range of women's formal wear for age group 18-25 years.She is the ambassador for the National Multiple Sclerosis Society, involved with offering help to the needy, through public announcements and using her name and image.She has been the face of several big-name brands, including Christian Dior, Rolex, Armani Exchange, Revlon, Ralph Lauren, Calvin Klein, Giorgio Armani, Escada, Moschino, Dolce & Gabbana, Fendi and Next. She has ramp-walked for various high-profile designers, such as Prada, Louis Vuitton, Chanel, Oscar de la Renta, Marc Jacobs, Kenzo, Vivienne Westwood, and Giles Deacon. In 2006, she made her debut on the silver screen with the hit James Bond film Casino Royale (2006), essaying the role of a tennis player.
She has made special appearances on the television on Entourage (2004), Late Night with Conan O'Brien (1993), and The Late Late Show with Craig Kilborn (1999), apart from being a guest judge on The Tyra Banks Show (2005) and Project Runway (2004).She acted in How I Met Your Mother: The Yips (2007) episode of How I Met Your Mother (2005) drama series in 2007, along with her fellow Victoria's Secret Angels - Miranda Kerr, Adriana Lima, Marisa Miller, Heidi Klum and Selita Ebanks. She has featured as a cover model in numerous fashion magazines, such as Vogue, Harper's Bazaar, Ocean Drive, Lui, Wiener, Self, GQ, Elle, Cosmopolitan, Flair, Vanity Fair, Russh, Marie Claire, Numero, and Grazia.This Brazilian babe has appeared in a variety of high-end editorials, which include Ocean Drive, Vogue, Glamour, Love, W, Lui France, V, Harper's Bazaar, S Moda for El Pais, and Interview.She has worked with various international model agencies, like DNA Models (New York), Way Model Management (Sao Paulo), Viva Model Management (Paris and London), and Priscilla's Model Management (Sydney).She has been a host on award shows, like The MTV Music Awards and Fashion Rocks.