Mary-Kate & Ashley Olsen’s Cinco de Mayo celebration

Ashley and Mary-Kate Olsen

Steve Granitz/WireImage

05/07/2010 AT 4:00 PM ET

Mary-Kate Olsen spent Cinco de Mayo with her sister, Ashley in New York. The duo headed downtown to popular Mexican eatery Dos Caminos in a black SUV. Also at Dos Caminos that night? Jessica Simpson.


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