Danniella's performance of "Grease" was meant for Emily. They must have decided to cancel the one they had planned for Danniella and switch them.

Did they actually say that?

Possibly...

I know what you mean, it did look very 'Emily-ish'

They didn't say it, but I've seen Torvill and Dean discuss costume changes, and how they pick the songs for the following week in advance.

All of the lifts, the pink, the character - just had Emily written all over it.

It would have suited Emily, but she has already had a pink "Barbie" dress - think it was her first routine. Danniella is also "girly" in a different sort of way (and I don't mean that in any derogatory way), and I believe "Sandy" was meant for her.

Hadn't occurred to me but I think you could be right!

hmmm, kinda but dont think it was.