Singer will embark on a rare UK and Ireland tour in 2016
Singer will celebrate success of '25' album with rare live appearances
'25' has sold 737,000 copies so far this week
Singer describes the response to her record breaking third album '25' as 'overwhelming but incredible'
'25' is also on target for the fastest selling album of all time in the UK
Singer previously said the crowds are 'too big' at Worthy Farm
Singer also talks about scrapped '25' recording sessions
'25' is already the second fastest selling album of all time in the UK, and on target for number one
Drake responds to claim with Instagram post
Singer joined host Matthew McConaughey on US comedy show last night (November 21)