Heidi Kaulitz (born June 1, 1973), better known by her birth name Heidi Klum, is a German American model, actress, television host, business woman, fashion designer, television producer, artist, and occasional singer. She is married to German guitarist Tom Kaulitz, a member of the German band Tokio Hotel. Klum's other projects have included music and video games. 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. She also has appeared in several music videos, including Jamiroquai's video Love Foolosophy from their album A Funk Odyssey, and Kelis's Young, Fresh n' New, off her second 2001 album Wanderland. In early 2004, while still pregnant, Klum began a relationship with musician Seal. Klum and Seal married on May 10, 2005, on a beach in Mexico. They have three biological children together: sons Henry Gunther Adeola Dashtu Samuel (born September 15, 2005) and Johan Riley Fyodor Taiwo Samuel (born November 22, 2006) and daughter Lou Sulola Samuel (born October 9, 2009). In December 2009, Seal officially adopted Leni, and her last name was changed to Samuel.