I'm thinking that Rihanna is saving Diamonds Tour UK dates for the day after an X Factor UK performance? Get that maximum exposure. Actually for maximum exposure in the UK perform on Strictly Come Dancing, not X Factor. [-See ratings-]
The only thing is, if she performs on XFUK, will she be doing Diamonds? Promoting a single that already reached #1 weeks ago?
Rihanna want that 3rd consecutive #1 single&album at the same time
She will probably release Euro Dates in December,like that parent can buy as a XMAS gift