Supermodel Heidi Klum says she is "amazed" to be included in the Forbes Power Women list.

Klum was ranked at number 39 on Forbes magazine's annual list of the most influential women in the world.

"Can you believe it", she told talk show host Jay Leno Tuesday night, before producing a joke business card which had her name, photograph and the words: "39th Most Powerful Woman In The World", express.co.uk reported.

"Of course the First Lady (Michelle Obama) was number one, and Oprah (was ahead of me) and many, many amazing women. I was amazed I was even part of it," she added.