Kourtney and Khloe Kardshian pose nude in a racy new ad for their Miami store, Dash.The E! reality stars -- together with two of their "Dash Dolls" employees -- are covered with airbrushed bodysuits that say "Dash Miami."

"Kourt and I came to Miami to revamp Dash, and that's exactly what we did!" blogged Khloe, 25. "We worked our little tushies off and were so excited about the store's fab new makeover that we thought what better way to celebrate than by getting one of our own.

Dash has never looked so good! LOL."Continued Khloe, "It literally took ALL day to get airbrushed but it was so worth it."Their photo shoot will be featured on an upcoming episode of Kourtney and Khloe take Miami.