Despite facing rumors that she may have received a little help from her designer friend Roland Mouret on her new line, Victoria Beckham’s getting the ultimate revenge: success. Her collection of dresses is doing remarkably well, in spite of These Economic Times. Posh somehow is defying the laws of physics, gravity, and, er, economics right now by launching a luxury brand when no one wants to buy luxury, and then having it, you know, sell. She hit Bergdorf Goodman last Friday to personally introduce an early delivery of the line (which ranges from $1,000 to $3,000) to an intimate crowd of 65. And less than a week later, a Bergdorf representative confirmed to us that half the stock is sold out. This follows her line’s success in England where Selfridges sold out of her entire collection at both the London and Manchester locations in one day. “I don’t have a doubt in my mind that these special pieces will sell out,” Linda Fargo, Bergdorf’s senior vice president, Fashion Office & Store Presentation, told us. “Our gals still want the rare and hard-to-find pieces, and especially things that are so flattering and well made. They’re sexy but elegant at the same time — a lethal combination for my money.” The luxury department store expects five or six additional styles when the global launch takes place in February. Sounds like a happy victory for Miss Victoria.