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 in The Devil Wears Prada (2006) and Perfect Stranger (2007).
In 2008, she became an American citizen while maintaining her native German citizenship.
After winning, she appeared on the Gottschalk Late Night Show, a German television show with host Thomas Gottschalk.
In fact, some noted fashion designers have long been commenting on Klum's limited role as a fashion model.
Karl Lagerfeld, for example, in 2009 agreed with German designer Wolfgang Joop, who called Klum after she had posed naked on the cover of the German edition of GQ magazine, Lagerfeld observed that neither he nor Claudia Schiffer knew Klum, as she has never worked in Paris and was insignificant in the world of fashion, being "more bling bling and glamorous than current fashion." In December 2004, Klum became the host, judge and executive producer of the reality show Project Runway on the U. cable television channel Bravo (airing on Lifetime television beginning in 2009), in which fashion designers compete for the opportunity to show their line at New York Fashion Week and receive money to launch their own fashion line.
Since 2007, she has been a celebrity spokesmodel for Jordache and Volkswagen.
In addition to modeling, she has appeared in several TV shows, including Spin City, Sex and the City, Yes, Dear, and How I Met Your Mother.
She has also appeared on TV shows including Sex and the City, How I Met Your Mother, Desperate Housewives and Parks and Recreation.
From 2013 until February 2019, Klum was a judge on NBC reality show, America's Got Talent.
In November 2008, Klum appeared in two versions of a Guitar Hero World Tour commercial, wherein she did a take on Tom Cruise's iconic underwear dancing scene in Risky Business.