In the movie Bridesmaids , the character Becca is naive .
At the engagement party , Annie meets Lillian 's bridesmaids : cynical cousin Rita ( Wendi McLendon-Covey ) ; naïve and idealistic friend Becca ( Ellie Kemper ) ; the groom 's raunchy sister Megan ( Melissa McCarthy ) ; and Helen ( Rose Byrne ) , the rich and beautiful wife of the groom 's boss .
Bridesmaids -LRB-2011 film-RRB-