Elle and Dakota Fanning were in mourning on Tuesday following the very sad death of a very special family member.Their beloved grandfather and sporting legend, Rick Arrington, passed away and they both paid tribute to him with emotional Instagram messages. MORE: Elle Fanning posts photo with Dakota and their mom for emotional reason Elle took to social media with a photo of the former American football player and wrote a lengthy message remembering him. WATCH: Elle Fanning in The Great