Madonna has shed her skin several times over her two-decade career, reinventing herself to continually adapt to the times. And for her Drowned World Tour, which kicks off Saturday in Barcelona, Spain, the chameleon of pop will retry a few of them on for size.

With no fewer than five costume changes, each representative of a different phase of Madonna's career and created with the help of fashion houses such as Jean Paul Gaultier (who designed cone-shaped bras and the like for 1990's Blond Ambition Tour) and Milan-based designers Dean and Dan Caten (creators of the D Squared line), her first tour in eight years will be her grandest spectacle to date, according to her spokesperson, Liz Rosenberg.

A torn shirt and zippered black pants will represent her early days, while leather chaps over jeans, which she'll wear for "Don't Tell Me," and the ghetto fabulous guise seen in the "Music" video will bring her style back to the 21st century.

A black wig and white makeup will exemplify the geisha girl look seen in 1998's video for "Nothing Really Matters." She'll also wear a hybrid of the clothes from 1986's "La Isla Bonita" clip and the costumes from the 1996 movie "Evita," in which she starred.

Madonna is expected to play guitar at one point during her set, which will feature 10 dancers and two back-up singers, Rosenberg said.

The Drowned World Tour, in support of her 2000 album, Music, will hit U.S. shores July 21 in Philadelphia. Twenty-nine shows in 12 cities are scheduled before the U.S. leg winds down September 14 in Los Angeles (see [article id="1443377"]"Madonna Adds Drowned World Tour Dates"[/article]).

For fans who don't score one of the summer's hottest tickets, HBO will broadcast Madonna's August 26 show at Michigan's Palace of Auburn Hills live (see [article id="1444026"]"Madonna Bringing Drowned World To HBO"[/article]).