Bette Midler is auctioning off her most iconic outfits! The sale is set to take place at Julien's Auctions in Beverly Hills, and highlights include one of her famous mermaid costumes (shown), the Valentino gown she wore to the 1992 Oscars, and loads of Bob Mackie stagewear. The Divine Miss M will donate a portion of the proceeds to the New York Restoration Project, a non-profit she created in 1995 to restore small parks and community gardens in New York City. The auction will take place on November 12th, and online bids will be accepted at julienslive.com. Click through the gallery to browse a selection of pieces up for bidding!