Beverley Catlett is one of Tiffany and Britanny 's best friend .
At the Hamptons hotel , Kevin and Marcus ( as Brittany and Tiffany ) meet Brittany and Tiffany 's three best friends , Karen ( Busy Philipps ) , Tori ( Jessica Cauffiel ) , and Lisa ( Jennifer Carpenter ) , and their rivals the Vandergeld sisters , Megan ( Brittany Daniel ) and Heather ( Jaime King ) .
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