The stunning actress found herself on the horns of a prickly dilemma during post-production of her latest movie Hippie Hippie Shake.

While Si, 26, played her role as 60s publisher Richard Neville’s girlfriend, Louise, to perfection, her, er, lady garden - or rather, lack of it - wasn’t up to, er, scratch…

“The film is set in the swinging 60s when fashion was wild and body hair even wilder,” says our studio mole.

“Sienna was an absolute star throughout filming and her performance was flawless.

“The only slight problem being that she’s very much a girl of the Noughties - and this extends to her personal upkeep.

“Unfortunately, Brazilians weren’t common in the 60s and Sienna’s part involved one or two nude scenes - meaning that her grooming habits were on full display.

“A merkin or pubic wig simply wouldn’t have done the trick, but luckily computer wizardry came to the rescue.

“Sienna’s private parts were digitally enhanced, giving her a rather unruly, loud and proud bush.

“All the cast had a good giggle about it and stoical Sienna happily played along.

“But it’s safe to say this is one look she won’t be recreating on her next summer hols.”

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