What do Phillip Lim, Burberry Prorsum, Costume National, Maison Martin Margiela, Neil Barrett, and Rick Owens have in common?? They've all teamed up with Hong Kong mega retailer Lane Crawford to create one-of-a-kind pieces for online highend retailer 20ltd.

"20ltd is exclusively collaborating with Lane Crawford in the final stage of The Collective: Synergy in Fashion, their innovative design project celebrating the 2008 Beijing Olympic Games. From October 1-20, 20ltd are offering for sale six one-of-a-kind designer outfits. 100% of the proceeds will go to Special Relief Funds for Children affected by the Sichuan Earthquake established by Unicef under its Driving Dreams project."

Check out all 6 designs. Of note: Burberry Prorsum's Sailing Jacket (a mink lined fitted jacket), Margiela's Badminton Top (a backless top of shuttlecocks), and Rick Owens' Judo Mask and Jacket.

The pieces are up through 10.20.08, unless, of course, they're purchased. Each of the one-offs has a hefty price tag of £5,000, which is a small price to pay for a one-of-kind-piece by this calibur of designer.