Answer
In the 2011 comedy "Bridesmaids," Rose Byrne portrays Helen, a successful and competitive bridesmaid who clashes with the protagonist, Annie (Kristen Wiig). Helen's Type-A personality and attempts to control the wedding planning create tension within the group of bridesmaids, leading to humorous and relatable situations. Byrne's performance as Helen is both hilarious and poignant, showcasing her comedic timing and ability to create a complex and memorable character.