14/08/2014 12:37 BST | Updated 22/05/2015 06:12 BST

Frugal Fashion! Keira Knightley Recycles Recycled Wedding Dress

How does the old saying go? If it ain't broke, don't fix it. Keira Knightley is obvious sticking to that style rule, as she wowed again in her gorgeous wedding dress, that she'd already worn before the Big Day.

And it was third time lucky because Keira looked absolutely stunning in the ivory strapless Rodarte number for the SeriousFun London Gala 2013 at The Roundhouse in Camden.

Keira was first seen wearing the frock at a pre-Bafta party (pictured below) all the way back in 2008.

She then said 'I do' to hubby James Righton in the South of France in May 2013 wearing the prom dress paired with a Chanel tweed jacket and flowers in hair at a ceremony in Mazan.

This time round, she refreshed the look by adding in a long-sleeved sheer and beaded overlay. Very clever, Keira.

The Serious Fun Children's Network is a growing community of camps and programmes serving children with serious illnesses and their families and was set up by Paul Newman in 1988.

And Keira was the belle of the ball.