Elle and Dakota Fanning are truly sister goals in Elle's latest sweet post of the two stars, which features unbelievable throwback photographs of the two.MORE: Elle Fanning leaves fans shocked by her appearance for new true crime roleIn honor of Dakota's 28th birthday, her younger sister shared a heartwarming tribute to the actress on Instagram with impossibly cute photos of the two growing up.The The Great star paired the images with a lengthy caption dedicated to her sister, and showered her with love and compliments.WATCH: Elle announces much-anticipated news regarding future of hit Hulu show The GreatMORE: Meet The Great star Elle Fanning's famous boyfriend Max MinghellaThe heartfelt tribute started off quite poetically. She wrote: "I have watched many make your acquaintance.