SAPO Fotos

Kim is never shy about showing off her best-known feature. 'Everyone is asking if I'm worried [my behind] is going to go away," she said of her 'Dancing With the Stars' workouts. 'No, it's going to tone it up.' Credits: Nunez/WireImage

... and channels her inner flapper with sister Khloe at the Pur Jeans Halloween Bash on Oct. 31, 2008. Credits: Pizzello/AP

Kim goes for the safari look at the 40th birthday party for McDonald's BIg Mac on July 27, 2008... Credits: Sayles/AP

Kardashian dials down her usual heavy makeup for a more approachable look... Credits: Strauss/WireImage

Looks like all her hard work's paid off! Credits: Le Segretain/Getty

Or she could just keep her tush toned dancing up a storm on season seven of 'Dancing With the Stars.' Credits: McNeal/AP/ABC