Henley played Lucy Pevensie again in the 2008 sequel to The Lion , the Witch and the Wardrobe , Prince Caspian and the 2010 sequel The Voyage of the Dawn Treader . Henley reprised her role of Lucy Pevensie in The Lion , the Witch and the Wardrobe , 2008 sequel Prince Caspian and 2010 sequel The Voyage of the Dawn Treader .