This will be the third time the 28-year old actress has donned the beautiful Chanel Couture frock. The first time Keira was pictured wearing it was back in 2008, before she chose to recycle it for her low-key wedding in France back in May, when she got married to Klaxons beau, James Righton.
And it looks like Keira's not ready to pack away her favourite dress just yet, as she chose to wear it to the SeriousFun Children's Network London Gala at the Roundhouse last night.
With the addition of an embellished, sheer long-sleeved top (which she wore tucked into the dress), Keira gave her bridal gown a quick update and transformed it from a simple (albeit Chanel) tulle dress, to a glamorous cocktail frock. A pair of simple strappy gold sandals were the perfect way to make the dress party-ready.
Any brides who don't know what to do with their treasured wedding dresses once the big day's over, should take Keira's lead and customise. What's the point of letting it sit in a box?
By Olivia Marks