London, Mar 21 : While the whole world is debating on "Size Zero", there's one person who is completely bemused by the whole concept -supermodel Heidi Klum.

The 35-year-old stunner, who lives in America with her children and British singer husband Seal, says she can't get her head around what the "phrase" means.

"A size zero?" The Daily Express quoted her, as saying.

The statuesque German catwalk queen, who once gave skinny Victoria Beckham a year's supply of cupcakes for her birthday, added: "I've never heard of that. That didn't exist when I was growing up. When did that start? What does it mean?" (ANI)