Did Lily James do her own singing in Mamma Mia?

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Tags

1. #trailer
2. #hearing
3. #approval
4. #performance
5. #probably
6. #official
7. #mamma
8. #answer
9. #james
10. #moving
11. #movie
12. #wondering
13. #after
14. #streep
15. #voice
16. #really
17. #incredible
18. #singing
19. #short