Lisbon gig is make-or-break for Winehouse

Amy Winehouse has been told that she must prove her reliability if she wishes to tour the US this summer.

The singer's chances of hitting the road in the States rest solely on her performance at the Rock in Rio festival in Lisbon tonight.

"This gig is hugely important as it will either give her summer US tour the go-ahead or see it scrapped altogether," a source told The Mirror. "Both the record company and bookers in the States are using this weekend's gig as a marker to see whether Amy is up to it or is still totally unreliable."

Amy's team are confident that the troubled star will prove herself tonight - because she does not want to miss out on the hefty pay packet she will receive after touring the US.

The insider added: "While her band have been practising for the past two weeks, Amy hasn't turned up to a single rehearsal. Weirdly though, no one is panicking and everyone's confident she'll come through on the night.

"After all - she has around £8 million in revenue and merchandise at stake. That should be incentive enough for anyone!"