Emma will be a Christmas Elf NBC's Today Show starting this morning.

http://www.nt2099.com/J-ENT/news/american-entertainment/today-kicks-off-its-15th-annual-toy-drive-and-shares-the-holiday-spirit-with-those-in-need/

NBC News’ “Today” kicked off its 15th Annual Holiday Toy and Gift Drive this morning, and this year, millions of children across the country will benefit from the generosity of countless viewers and corporate donors. [...] Special celebrity guest “elves” help with the gift collection every morning on the air at 8:30 a.m. This year’s celebrity elves include Matthew Broderick, Heidi Klum, Kevin Bacon, Drake Bell and Josh Peck, Emma Watson, Kristin Chenoweth, the members of Fall Out Boy and many more.