Lily Allen has lost her wedding dress.

The 'Our Time' singer - who has daughters Ethel, two, and Marnie, 14 months, with husband Sam Cooper - has no idea what has happened to the Chanel Couture gown she donned at her wedding reception in July 2011.

In an interview with Miquita Oliver - who was one of her bridesmaids - for TV channel 4 Music, she was asked the most expensive item in her wardrobe and replied: ''Oh you do not want to know! There's two bits to this answer. One, it's not in my wardrobe -- it's missing. And two, it's my Chanel Couture wedding dress that's worth about £200,000.

''I don't know where it is.''

Lily had two dresses for her nuptials, a Delphine Manivet gown with a fishtail skirt, lace overlay and lace sleeves teamed with an elaborate and lengthy lace headdress with a flower detail on the side of her veil for the ceremony, and the Karl Lagerfeld-custom created loose-fitting gown with billowing sheer sleeves and elaborate embroidery, which she wore for the reception.

It is unclear whether she knows the whereabouts of her other wedding gown.