Hip-hop outfit Black Eyed Peas, now a quartet thanks to the addition of female vocalist Fergie, have joined Justin Timberlake and Christina Aguilera's Justified and Stripped tour as the opening act.

Hip-hop outfit Black Eyed Peas, now a quartet thanks to the addition of female vocalist Fergie, have joined Justin Timberlake and Christina Aguilera's Justified and Stripped tour as the opening act. As previously reported, the trek begins June 4 in Phoenix and wraps Aug. 24 in St. Paul, Minn.

The group -- also including original members Will.I.Am, Apl de Ap, and Taboo -- will be supporting its latest album, "Elephunk," due June 24 from A&M. In addition to the Timberlake/Aguilera dates, the Black Eyed Peas will also be playing a number of headlining club shows interspersed with the tour.

Timberlake guests on the album's first single, "Where Is the Love." As previously reported, Blink-182 drummer Travis Barker and Papa Roach also contributed guest appearances to "Elephunk," the follow-up to 2000's "Bridging the Gap." Album track "Let's Get Retarded" can be sampled from the group's official Web site.

Here are Black Eyed Peas' headlining club dates:

May 30: San Diego (venue TBA)
May 31: Carlsbad, Calif. (venue TBA)
June 1: Anaheim, Calif. (House of Blues)
June 15: San Francisco (venue TBA)
June 22: Albuquerque, N.M. (Sunshine Theater)
June 23-24: Boulder, Colo. (Fox Theater)
June 27: Austin, Texas (La Zona Rosa)
June 30: Houston (Numbers)
July 1: Dallas (Trees)
July 3: Lawrence, Kan. (venue TBA)
July 4: Milwaukee (venue TBA)
July 8: New Orleans (House of Blues)
July 18: Atlanta (Cotton Club)
July 20: Minneapolis (1st Avenue)
July 24: Chicago (House of Blues)
July 27: Indianapolis (the Vogue)
July 30: Burlington, Vt. (Higher Ground)
Aug. 7: Boston (Paradise Rock Club)
Aug. 10: Washington, D.C. (9:30 Club)
Aug. 12: New York (SOB's)
Aug. 18: Philadelphia (TLA)
Aug. 31: Seattle (venue TBA)

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