The 26-year-old wants a pair of heels and flats so she can have a choice of footwear when she marries fiance Sam Cooper in Gloucestershire, England, on June 11, and has enlisted the help of the famous designer to create her shoes.
The Smile hitmaker told Vogue.com: 'He's making me a pair of flats and a pair of heels, so I can run up and down hills.'
Speaking at the launch party of her debut Lucy In Disguise collection yesterday, Lily added: 'It's much more chic to have two pairs I think. I just really hope it doesn't rain.'