Madonna is taking her new adopted daughter Mercy on holiday.

The '4 Minutes' singer - a devout follower of the mystical Jewish faith Kabbalah - wants to take the four-year-old tot to see the Wailing Wall in Jerusalem, along with the star's adopted son David.

The trip will happen in September to coincide with Madonna's final date of her 'Sticky and Sweet' tour in Tel Aviv, Israel.

A source told Britain's The Sun newspaper: "Madonna wants to give Mercy enough time to settle into her new home. By September she feels she will be ready to take the trip without the danger of upheaval.

"The Wailing Wall is a very sacred place for anyone with links to the Jewish faith and she wants the children to see it."

Mercy flew from her home country of Malawi to London to start a new life with the 50-year-old singer on Saturday (20.06.09).

Madonna met the little girl from her private jet with her children - including 12-year-old daughter Lourdes and eight-year-old son Rocco - and ex-husband Guy.

The family is expected to stay in the UK for a few days before returning to Madonna's £25 million home in New York.