Nicole Richie Sells Off Designer Engagement Party Gown 6/18/08

New mom Nicole Richie is selling off the vintage Halston gown she wore to her ill-fated 2005 engagement party.

The size 0 dress will be on show at the Fisch for The Hip consignment store in New York, where fashion experts expect it to sell for $3,000 (GBP1,500).

Richie has kept the gold garment even though her engagement to Adam 'DJ AM' Goldstein fell flat, but now she's starting a new life with rocker Joel Madden, she has decided it's time to let the item go. A source tells In Touch magazine, "Nicole loved this dress. It's a piece of art."