Photos: Kendall and Kylie Jenner flash little of their toned abs in $exy crop tops as they launch fashion collection

Kendall, 20, and Kylie Jenner, 18, both looked gorgeous flashing their toned waist line as they attended a private dinner to launch their new fashion line at Neiman Marcus on Thursday night. 

The sisters wore abs skimming tops for the occasion as they celebrated the #OnlyatNM collection. 

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