Heidi Klum (born June 1, 1973) is a German-American model, television host, businesswoman, fashion designer, television producer, and an occasional actress. In 2008, she became an American citizen while maintaining her native German citizenship.

Klum became internationally known for her appearances on the cover of the Sports Illustrated Swimsuit Issue. In 1997 she became the first German model to become a Victoria's Secret Angel. Following a successful modeling career, Klum gained acclaim as the host and judge of the reality show Project Runway which earned her an Emmy nomination in 2008. She has worked as a spokesmodel for Dannon and H & M, and has appeared in numerous commercials for McDonald's, Volkswagen and others. In 2009, Klum became Barbie's official ambassador on Barbie's 50th anniversary. As an occasional actress, she had supporting roles in movies including Blow Dry (2001), Ella Enchanted (2004), and made cameo appearances on The Devil Wears Prada (2006) and Perfect Stranger (2007). She has also appeared on TV shows including Sex and the City and How I Met Your Mother.

In May 2011, Forbes magazine estimated Klum's total earnings for that year as $20 million. She is ranked second on Forbes' list of the "World's Top-Earning Models", behind Gisele Bündchen. Forbes noted that since ending her 13-year run as a Victoria's Secret Angel, Klum has become more of a businesswoman than a model. She was married to English singer Seal from 2005 until 2012.

Klum is an artist, and had several of her paintings appear in various art magazines in the U.S. On September 27, 2002 she dedicated a sculpture she painted called "Dog with Butterflies" to commemorate the role of rescue dogs in the aftermath of September 11.

In 2004, Klum co-authored Heidi Klum's Body of Knowledge with Elle magazine editor Alexandra Postman. The book gives Klum's biography as well as her advice on becoming successful. Prior to that, Klum had been an occasional guest columnist for the German television network RTL's website. She wrote an essay for the German newspaper Die Zeit.

In November 2006, Klum released her debut single "Wonderland", written for a series of television advertisements for the German retailer "Douglas". Proceeds were given to a children's charity in her hometown of Bergisch Gladbach. She contributed to her husband Seal's 2007 album System, singing the duet "Wedding Day", a song that Seal wrote for their wedding.

In March 2013, it was announced that Klum will be joining America's Got Talent as the show's new fourth judge.