Yet another reason to love Kristen Bell! She played the voice of Princess Anna from Disney's Frozen. She got into character and left a voicemail message for a 6-year-old girl with an inoperable brain tumor. The 6-year-old's father posted a video of her listening to the voicemail for the first time. I'm sure the played it over and over for her and with good reason! It's really, really cute.