the results of scd are always filmed on saturday nights, then the recording shown on sunday. (nearly) everyone knows this, i find it really irritiating that they refer to 'last nights dancing' when they are speaking only a couple of hours after it in reality.
and take that went out of there way to let you know they were singing live on both shows with a few ad libs.
did you expect that they all went home after the show on saturday, then came back on sunday and got dressed up in all the same clobber only to stand under a spotlight, with the same audience, just for half an hour on a sunday evening.........
I can't speak for Chrissa, but I don't number myself among those avid fans who watch it closely enough to know whether it's the same clobber and the same audience.
"In order to secure the best guests possible for the show on rare occasions musical guests are pre-recorded because of their availability. For instance, Robbie Williams pre-recorded his performance of 'Rock DJ' (shown on Sat 9th Oct) on Sat 2nd October, when he was already at the BBC performing his duet with Gary Barlow"