Madonna has revealed how she explained her on-stage kiss with Britney Spears to daughter Lourdes.

BreakingNews.ie says the 47-year-old singer told Lourdes, now nine, that her kiss with Britney at the MTV Awards was a spiritual moment.

"I am the mommy pop star and she is the baby pop star," she told her, "and I am kissing her to pass my energy on to her."