Raquel Welch escaped the Oscar madness in LA only to get held up at the security checkpoint at O’Hare in Chicago after her black Dolce & Gabbana bustier set off the metal detector. Welch was in town to tape “The Oprah Winfrey Show” and promote her new book, “Raquel: Beyond the Cleavage.” The star was patted down by a TSA agent for several minutes in a clear, square box in full view of waiting passengers. The agent eventually blamed the problem on the boning in her bustier. “She probably isn’t going to fly in a bustier anymore,” said Welch’s spokeswoman.