'American Idol': Allison Iraheta, Orianthi join Adam Lambert tour

allison-iraheta-getty.jpgAdam Lambert's Glam Nation has picked up a couple of new citizens.

Last year's "American Idol" runner-up has set the dates for a summer tour, as well as his two opening acts: fellow "Idol" finalist Allison Iraheta and singer-guitarist Orianthi, who's appeared twice on "Idol" this season.

The Glam Nation Tour will kick off June 4 in Wilkes-Barre, Pa., and hit mid-sized venues mostly in the eastern half of the country (plus one stop in Canada) throughout June and July. The only West Coast stop is a two-night stint at the Orange County Fair on July 27-28. It will wrap up Sept. 18 at its biggest venue, Tropicana Field in St. Petersburg, Fla.

Lambert and Iraheta have obviously performed together before, following last summer's "American Idol" tour with a February show where they shared the stage with winner Kris Allen. "I am such a fan of Allison's music and I am so excited for her to perform it live in front of an audience," Lambert says of her. "We have such a great brother-and-sister energy. ... She is pure rock and roll."

Orianthi -- who like Lambert and Iraheta is represented by "Idol" producer 19 Entertainment -- played guitar on "Sleepwalker" on Lambert's album and has a hit in her own right with "According to You." She performed on the "Idol" results show earlier this season and was in Mary J. Blige's backing band on "Idol Gives Back."

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Photo credit: Getty Images

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