Madonna says her daughter Lourdes was mortified when she flashed her bottom at the Grammy Awards.
The 56-year-old singer made headlines around the world when turned up in fishnet tights and a black thong on the red carpet.
She's told The Jonathan Ross Show - to be broadcast on Saturday - she just "couldn't help herself."
The star is currently promoting her 13th studio album Rebel Heart and says the title reflects her original idea of making a two-sided record:
