Keira Knightley dazzled in a couture Chanel white frock at the Anna Karenina London premier last night, and spoke about her upcoming nuptials to musician James Righton, too.

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CELEBRITY ENGAGEMENT RINGS

Speaking to Vogue the actress didn't dismiss the idea of Chanel designer, Karl Lagerfeld designing her wedding dress: "Well, that would be pretty generous of him, he is an incredible designer."

It was rumoured that the famous Chanel helmer had offered to design the actresses wedding dress as a gift.

CHANEL GOWN FOR KEIRA'S WEDDING?

But when quizzed further on the matter she said: "To be honest, I'm working on another film straight after Anna Karenina, which finishes after Christmas. Then, maybe I'll start thinking about the dress and the guests and the venue. It really depends on what sort of wedding I decide to have - if I go with a jeans and T-shirt option, then maybe it wouldn't be quite right. I haven't decided on anything yet."

KEIRA KNIGHTLEY ENGAGED

Keira and The Klaxons' star James Righton, announced their engagement in May after 15 months of dating.