Amy Winehouse is worrying festival bosses with a string of cancellations.

Unreliable Amy failed to show at French music festival Rock En Seine in Paris last week and is said to be facing legal action for her no-show.

Now gig organisers are reportedly unwilling to book her at all.

The Rehab diva is due to perform at Bestival this weekend but organisers say they already have a back-up plan in case she decides to cancel.

Bestival creator DJ Rob da Bank tells fans in his online blog, "If she can't do the gig, rest assured I do have a very good back-up plan. Have we ever let you down?"