Britney Spears Walks Off Stage, Breaking Down?

She’s been basking in the glory of her killer comeback tour as of late, but last night Britney Spears showed signs that things may not be going as well as everyone thinks.
The “Toxic” songstress gave a concert in Vancouver, British Columbia, though fifteen minutes into the set she left the stage for more than a half hour.
The reason? Cigarette smoke. An announcement to the crowd stated, "The building is awfully smoky. It is uncomfortable for everyone on stage, including Ms. Spears. Please extinguish all cigarettes – this is a non-smoking building, and the show will resume when the smoke on the stage is cleared."

Finally, Brit Brit was back onstage, but she only made it through a couple more songs before she left again momentarily. Finally, she ended the show with “Womanizer,” telling the crowd, “Vancouver, don’t smoke weed.”