These Dancers have a strong beginning and I can tell by looking at the pose that they have strong legs to keep themselves stable throughout the routine. Their costumes are beautiful and reminds me of the professional, and elegantly designed costumes used in the ballroom community.
They have some fun tricks, and while the video is playing make sure to look at their faces. They really bring the crowd in to the show by letting their excitement come out.
Sadly, I don’t know their names
If you find out, let me know.