LOS ANGELES, California (X17online) - Madonna is preparing for her most extravagant world tour ever, with $2 million worth of costumes and jewelry alone, according to The Sun. The Sticky & Sweet tour kicks off at Cardiff’s Millennium Stadium in Wales tomorrow, with a two-hour set split into four acts.

"Pimp" pays homage to 1920s art deco style and gangsters, while the "Old School" act has Madonna paying tribute to her 1980's disco roots. The "Gypsy" portion was inspired by the spirit of Romanian folk music, and the "Rave" act was influenced by Far Eastern culture.

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