I have always been hot and cold on Jen Lilley, but I was very impressed with her performance in this one. Matthew Morrison puts on a sparkling show dancing, but Lilley surprised me since I have only ever seen her as an actor. In one number they both sing nicely.
As to character, Lilley fits the personality of Emma. Early in the movie she oozed wonder and awe first when she saw and experienced Leo's dancing. When she needed to show a hint of lovestruck, more wonder and awe. Then they get to Paris and you almost expect her to swoon. When the big rival, Giselle, shows up, Lilley is perfect as the nervous woman slightly lacking in confidence. Morrison plays off all that to have a little awe of his own at Emma's spontaneity and joie de vivre. Yes there is plenty of chemistry between these two.
I was disappointed in Emma that she let Giselle play her mind games even though she had been duly warned. I really expected Emma to be smarter than that. Giselle gives us something GAF sometimes (usually) lacks and that's some real tension with a good villain but not quite evil.
Outside the story there is plenty of scenery as they tour Paris. Paris is even better at Christmas. There is even more dancing, although the qualifying round of the dance competition was somewhat boring, but necessary for the story.
The movie was a feast worthy of the Christmas season.