Jennifer Garner and Anna Faris have reportedly signed on to star in a upcoming comedy blockbuster about “a high-school teacher recently left at the altar [who] must now send off her uptight cousin with a huge bachelorette bash.” According to Pajiba.com, the newlywed Faris and 13 Going On 30 star Garner have accepted the lead roles in Bachelorette Party, a proposed project based on the novel of the same name by Legally Blonde writer Karen McCullah Lutz.