Lilith Fair may be long gone, but Colbie Caillat, 30, Christina Perri, 28, and "Fight Song" singer Rachel Platten, 34, are reviving the girl-power spirit this summer on the 27-date Girls Night Out, Boys Can Come Too Tour, which kicked off July 10. The ladies dish on their must-haves to survive life on the road.

Preshow Potions

Caillat: "I drink hot water and honey with a little Jameson before I go on. I have a raspy voice, so that soothes it and smoothes it out."

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