On February 24 , 2008 , Chenoweth sang " That 's How You Know " from the film '' Enchanted '' at the 80th Academy Awards in the Kodak Theater . She also voiced Rosetta , the garden fairy in the 2008 animated film '' Tinker Bell '' . Later that year , Chenoweth appeared in the 2008 holiday romantic comedy film '' Four Christmases '' , playing the sister of Reese Witherspoon 's character
80th Academy Awards
80th Academy Awards
Kristin Chenoweth