Going back to the debut performance of the song, after days of endless YouTube replay of the llive performance I am now more than convinced that she was really miming the whole time. Couple of things, the mic was too close to her mouth the whole time, when the song ended she was trying to say something but didn't realise that the mic was eventually off, taking a good look at her lips everytime she sings the lyrics gives me a shitty notion that no matter how high the notes were and no matter how different the beat was her lips still looked somewhat awkward and stiff and lastly there were few instances that there was the music playing with the someone singing but her mouth was either close or was too contrived for words to come out of it, especially in singing this type of song.
The only thing that I couldn't seem to work out was why would she do this if she can eventually dance and sing at the same time. She was able to brilliantly perform Fight For This Love and Promise This without miming considering the fact that these songs were harder to sing. To see it yourself, have a look to the three performances;
Anyway, whether she did mime or not the performance was still lovely and fun. The best part of the performance was apparently the interview with Holly as we finally heard her lovely voice ( I am just being silly). The talk with Holly was so refreshing and it was completely cool to finally listen to her voice again saying stuff.