Though it's unclear how they first met, Reese has been besties with Jennifer Garner for years, and Jennifer has proven her devotion to her BFF by pulling out her saxophone to wish Reese a happy birthday on Instagram not just once but twice. The two love to get goofy together, and after OK! magazine falsely reported that the ladies were both pregnant in March 2019, Reese shared the magazine cover on Instagram, captioning it, "Hey @jennifer.garner! Can we raise our imaginary babies together?" Jennifer, of course, played along, replying, "We are going to be the cutest imaginary family!! I'll just go ahead and move in now."