Sure, Ryan Reynolds and Blake Lively have an adorable marriage [1], but lately we've been obsessed with the actress's relationship with Anna Kendrick [2]. The two are set to star in Paul Feig's A Simple Favour [3] on Sept. 20, but have developed a sweet friendship off screen. In addition to laughing it up together on the red carpet and attending award shows together [4], the talented ladies have been giving us glimpses of their bond on social media. While sharing a poster from the film on Instagram, Blake joked that Anna is "hotter, female(r)" version of her husband [5], Ryan. See even more cute moments between the costars ahead.