Anna Kendrick for a possible Princess Leia Organa roll?

OK, first of all, at the time of this writing, Aug. 30, 2015, Anna is 30 years old. Already 4 years older than Carrie Fisher was in Return of the Jedi at the Age of 26 (during filming). BUT, in my opinion, Anna looks as young, if not younger than Carrie did in A New Hope when Carrie was just 20 during filming in 1976. (Carrie was probably a product of the heavy smoking and drinking trend of the day.) So, my question is, could Anna even at the Age of 30 now pull off a younger Princess Leia in the Star Wars: Rogue One film? What she's got going for her is that she's as short and more petite than Carrie was in ANH.