Madonna will start her world tour in Cardiff in August - and will also play Wembley Stadium.
Robert Downey Jr has gone from a prison cell to a list of the 100 most influential people in the world.
Could Miley Cyrus' promising career be ruined by a photoshoot? And whose career is Mark Ronson giving a helping hand to?
Get clued up on all things Leona as we present the ten top facts that any aspiring super-fan should know.