<P> Reaching the ice palace, Anna meets Elsa, but when she reveals what has become of Arendelle, Elsa becomes upset, saying that she cannot undo it, and accidentally freezes Anna's heart . She then makes a giant snow monster named Marshmallow, who chases Anna, Kristoff, and Olaf away . Anna's hair begins turning white, so Kristoff takes her to meet the trolls, his adoptive family . Grand Pabbie reveals that Anna will freeze solid unless "an act of true love" reverses the spell . Kristoff races Anna back home so Hans can give her true love's kiss . Hans and his men reach Elsa's palace, defeating Marshmallow, and capturing Elsa . Anna is delivered to Hans, but rather than kissing her, Hans instead reveals that he has actually been plotting to seize the throne of Arendelle by eliminating both sisters . Hans locks Anna in a room to die, and manipulates the dignitaries into believing that Elsa killed her . He orders the queen's execution, only to discover she has escaped her detention cell . </P> <P> Olaf frees Anna, and they venture into the blizzard outside to meet Kristoff, whom Olaf reveals is in love with her . Hans confronts Elsa outside, claiming that she killed Anna, causing Elsa to break down . Anna spots Hans about to kill Elsa; she leaps in the way and freezes solid, stopping Hans . Devastated, Elsa hugs and mourns over her sister, who thaws out, her heroism constituting "an act of true love". Realizing that her magic is controlled by love, Elsa ends the winter before giving Olaf his own snow flurry to survive the warmer climate . Both Hans and the Duke are arrested, and removed from the kingdom . Anna and Kristoff become a couple, while both sisters are reunited, with Elsa promising never to lock the castle gates again . </P> <Ul> <Li> Kristen Bell as Anna, the 18 - year - old Princess of Arendelle and Elsa's younger sister <Ul> <Li> Livvy Stubenrauch as 5 - year - old Anna </Li> <Li> Katie Lopez as 5 - year - old Anna (singing) </Li> <Li> Agatha Lee Monn as 9 - year - old Anna </Li> </Ul> </Li> <Li> Idina Menzel as Elsa, the 21 - year - old Queen of Arendelle and Anna's elder sister <Ul> <Li> Eva Bella as 8 - year - old Elsa </Li> <Li> Spencer Lacey Ganus as 12 - year - old Elsa </Li> </Ul> </Li> <Li> Jonathan Groff as Kristoff, an iceman who is accompanied by a reindeer named Sven <Ul> <Li> Tyree Brown as 8 - year - old Kristoff </Li> </Ul> </Li> <Li> Josh Gad as Olaf, a comic - relief snowman that Elsa and Anna created as children, who dreams of experiencing summer </Li> <Li> Santino Fontana as Hans, a prince from the Southern Isles </Li> <Li> Alan Tudyk as the Duke of Weselton </Li> <Li> Ciarán Hinds as Grand Pabbie, the Troll King </Li> <Li> Chris Williams as Oaken, the owner of Wandering Oaken's Trading Post and Sauna </Li> <Li> Maia Wilson as Bulda, a troll and Kristoff's adoptive mother </Li> <Li> Paul Briggs as Marshmallow, a giant snow monster who guards Elsa's palace </Li> <Li> Maurice LaMarche as the King of Arendelle, Anna and Elsa's father </Li> <Li> Jennifer Lee as the Queen of Arendelle, Anna and Elsa's mother </Li> </Ul> <Li> Kristen Bell as Anna, the 18 - year - old Princess of Arendelle and Elsa's younger sister <Ul> <Li> Livvy Stubenrauch as 5 - year - old Anna </Li> <Li> Katie Lopez as 5 - year - old Anna (singing) </Li> <Li> Agatha Lee Monn as 9 - year - old Anna </Li> </Ul> </Li>

What is the name of the princess in frozen