New York, January 3 : Madonna, who wrapped her `Sticky and Sweet' world tour on December 21, may have "few more shows" up her sleeve.

The Queen of Pop's eighth concert tour to support her latest album `Hard Candy' had reportedly raked 280 million dollars in ticket sales making it the highest-grossing amount in a U. S. jaunt of 2008.

However, her tour, which had toured Europe and the Americas, was yet to hit a final note, according to a source.

"She will be back in London this summer performing a few more shows," the New York Post quoted a source as saying.

Her spokesperson did not return e-mails. (ANI)