Just hours after attending an Easter church service with Ben Affleck and their three kids, Jennifer Garner's friends threw her a 45th birthday party at Little Beach House in Malibu Sunday night. E! News reported that a small group of friends set up the party, and twenty of Garner's friends were in attendance, including Reese Witherspoon. The timing of the get-together couldn't have been better, as Garner filed for divorce last week. Though she and Affleck separated in June 2014 and had always intended to finalize their split, it took a while for the exes to put a pen to paper. A source told E! News that "her friends adore her and think the world of her."