(Cover) - EN Showbiz - Sienna Miller says she drinks gallons of camomile tea to try and calm her backstage nerves.

The 29-year-old actress is best known for her movie work, having appeared in successful films such as Layer Cake, Alfie and The Edge of Love. The talented star is a keen theatre actress too though, and is currently performing in Londons West End theatre district in a production of World War II play Flare Path.

Despite receiving positive reviews for her performance, the actress admits she still gets incredibly nervous before taking to the stage, and calms herself with plenty of relaxing beverages.

Terrified, literally shaking, deep breathing. I need camomile tea by the gallon. Its really scary and it doesnt seem to be getting any better, she told the British edition of OK! magazine.

The stars fans have been flocking to watch Sienna treading the boards, her designer pal Matthew Williamson included. The actress admits she has been overwhelmed by everyones generosity, although she isnt fond of some of the flowers shes received.

I feel like a right old dame! I have been inundated with the most extraordinary amount of flowers and champagne. It looks like a funeral parlour or a wedding but there are some lilies in there which are slightly depressing, she added. (C) Cover Media