Legendary singer Janet Jackson, 42, was hospitalized in Montreal last night where she is being treated for exhaustion and dehydration, according to a source who asked to remain anonymous.

We knew that fast pace concert tour was too much for the aging diva:

Janet Jackson was forced to postpone Monday night’s Bell Centre concert in Montreal at the last minute after being rushed to a hospital “due to illness,” according to promoter Gillett Entertainment Group.

“We’re not entirely sure [what happened],” said Michal Wielgus, a representative for Gillett, reached shortly before 8 p.m. “We don’t have all the details. We just found out 20 minutes ago.”

Some fans were already in the venue when the news was announced. “That’s never happened before in Bell Centre history,” Wielgus said. (Source)