AMERICAN STYLE: There is really no excuse for any last minute style blunders at next week’s inauguration — at least not for guests at the Mandarin Oriental hotel in Washington D.C. As part of the celebrations next week, Ralph Lauren is setting up a temporary boutique in the hotel’s lobby. It will offer a mix of the designer’s accessories and furnishings. For a perfect polish, there will even be a “Ralph Lauren Bow Tie Butler” on hand to help guests tie the perfect bow tie. And for those with a last minute fashion panic, two Lauren wardrobe consultants can work with clients on special requests and needs. The boutique will be open Jan.17 to 21.