Diane von Furstenberg was in London last night toasting the addition of hotelier to her long list of credentials. She was on hand to open the suite of rooms she designed at Claridge’s hotel, and the London contingent came out in full force to celebrate, including Victoria Beckham (who was rumored to have changed her vacation plans so as not to miss the fête), Gwyneth Paltrow, and Madonna. The Material Girl went Material Gent for the evening in a wide-legged black suit, paired with a structured blouse and navy fedora. She threw in a few femme touches to keep her just this side of drag—namely, red lips and a belt to accentuate her waist. Maybe she’s got menswear on the brain with the European shows going on now—her friends Domenico Dolce and Stefano Gabbana just celebrated their 20th anniversary in menswear in Milan, after all—but whatever the cause, we’re feeling her for-the-boys look. What do you think? Do you like how she expressed herself, or was her look over the borderline?